Pupils of 1E1 and 1E2,
I have collected your exam scripts, and will commence marking shortly.
I understand that this exam was quite tough for most of you. I did not set the paper, and I hope that at least some of my hints and tips proved to be useful. I would really like to apologise for the fact that quite a number of questions in the paper were about things I did not teach in class. I did try my best to give a crash course, but I apologise that I did not compare my notes and teaching materials with the other teachers beforehand.
And I am also very sorry if any of you got the wrong impression that the hints and tips I provided encompassed the entire scope of the exam. I too did not expect to see a number of edits and changes being made to the exam paper.
It definitely has not been easy for all of you, having to cope with so many changes in teachers over the past year. I wish it did not have to happen to your classes. But it is too late for regrets, and I do hope that all of you at least gave your best for this paper.
In any case, don't worry too much about it. What's done is done. Now is the time for you to focus on the other subjects. You've got Literature and Art tomorrow, and there's History on Friday.
And I hope that the experience from this exam has not completely turned you off Geography. Do try and remember the stuff that you have been taught over the past year, because much of it is directly relevant to the Geography syllabus at the Secondary 2 level and beyond.
All the best for the rest of your subjects.
Wednesday, 3 October 2007
Tuesday, 2 October 2007
Bukit Timah Nature Reserve
Singapore, lying within the tropical zone, and blessed with high temperature and high rainfall all year round, was once covered with tropical rainforests. It has been estimated that primary rainforest once covered about 82% of the land area of Singapore, approximately 442 km² or 44,200 hectares (ha).
However, ever since people have settled on the island, more and more of the original natural vegetation has been cleared, to make way for settlements and for agriculture and plantations. Today, only 192 ha or 0.43% of the original forest cover remains. Most of the surviving primary forest is restricted to the more pristine areas of the 163ha Bukit Timah Nature Reserve (BTNR), and in scattered patches throughout the 3,043 ha Central Catchment Nature Reserve (CCNR). The remainder of these two nature reserves is occupied mostly by secondary forest.
The Bukit Timah Nature Reserve contains the largest patch of primary rainforest left in Singapore. Bukit Timah Hill, at about 163.63 metres above sea level, is the highest point in Singapore.
A Treasure Trove of Species...
Bukit Timah has been the focus of attention for many scientists, not only because it is a rare example of a rainforest that has managed to survive while completely surrounded by urban development, but also because of the extremely rich diversity of flora and fauna that still exists within the nature reserve. This richness in plant and animal life has been noted ever since the 19th Century.
Back in 1854, the world-famous English naturalist Alfred Russel Wallace visited Singapore to collect beetles. He spent a lot of his time in the vicinity of Bukit Timah, which proved to be an extremely productive place for him: Wallace also mentioned some of the potential dangers he faced, among them the tigers which still prowled the forests in those days:
Today however, Singapore's primary forests are very different from the pristine forests in the rest of Southeast Asia because many of the large animal species are now extinct in Singapore. Tigers disappeared from the Bukit Timah area during the 1920s; the last tiger in Singapore was shot in the mid-1930s. Other large animals, such as leopard, wild boar, sambar deer, and various birds such as hornbills and pheasants have also been wiped out from the forests of Bukit Timah and the Central Catchment Area. Habitat destruction and deliberate hunting and persecution led to these species becoming extinct locally.
Although we have lost a lot of our larger animal species, there is a lot that still survives within our remaining rainforests. Today, it is estimated that BTNR is home to more than 840 flowering plant species and more than 500 species of animals. Scientists are still discovering new species previously unknown to science, and it appears that many of the species living in the BTNR and CCNR are found only in Singapore, and nowhere else in the world!
BTNR: Biodiversity
Within the forest of BTNR, it is dark and cool as the trees form a continuous canopy; very little sunlight reaches the forest floor. On the forest floor, only plants that do not need a lot of sunlight can survive.
Among the various species of plants include hardwood trees such as seraya, keruing and meranti. Palms, rattans, fig trees, lianas, vines and epiphytes are a few other examples of the rich diversity of plant species that can be found within the forest.
The animal life is also extremely rich; most visitors to the reserve will be able to spot one of the most common forest creatures, the long-tailed macaque. Other animals commonly seen include the plantain squirrel, slender squirrel, and common tree shrew. The colugo, also mistakenly known as the flying lemur, is a shy and nocturnal creature, but is often spotted by the sharp-eyed visitor. The forest is also home to many rare and endangered species, such as the lesser mousedeer, Sunda pangolin, and slow loris.
A large proportion of our native bird species are found within the rainforests of BTNR and CCNR, and virtually nowhere else in Singapore. Similarly, the forest is the habitat for a large number of species of lizards, frogs, and snakes that depend heavily on pristine, undisturbed rainforest. The rainforest is also home to a great diversity of insects and spiders; it is impossible not to hear the incessant call of the cicadas, and it is common to spot the huge webs spun by the golden orb web spider. Small streams flowing through the nature reserves are the last refuge for many native fish and other aquatic lifeforms such as freshwater prawns and crabs. In fact, Singapore has three endemic species of freshwater crab found only within streams in BTNR and CCNR. These species are found exclusively in pristine and undisturbed streams that flow through these nature reserves, and are found nowhere else in the world.
Importance of Tropical Rainforests in Singapore
Even though we do not possess very large areas of tropical rainforests, as compared to other countries like Malaysia, Indonesia, Congo and Brazil, our few remaining rainforests are still very important, for various reasons.
National Parks Board: Bukit Timah Nature Reserve
wildsingapore: Bukit Timah Nature Reserve
Ecology Asia: Bukit Timah Nature Reserve - a precious remnant of primary rainforest
Singapore's vest-pocket park: a rainforest survives within sight of skyscrapers
An Inordinate Fondness for Beetles
The Prowling Naturalist: Bukit Timah I: Alfred Russel Wallace in the Malay Archipelago
The Prowling Naturalist: Bukit Timah II: Visiting the Reserve
However, ever since people have settled on the island, more and more of the original natural vegetation has been cleared, to make way for settlements and for agriculture and plantations. Today, only 192 ha or 0.43% of the original forest cover remains. Most of the surviving primary forest is restricted to the more pristine areas of the 163ha Bukit Timah Nature Reserve (BTNR), and in scattered patches throughout the 3,043 ha Central Catchment Nature Reserve (CCNR). The remainder of these two nature reserves is occupied mostly by secondary forest.
The Bukit Timah Nature Reserve contains the largest patch of primary rainforest left in Singapore. Bukit Timah Hill, at about 163.63 metres above sea level, is the highest point in Singapore.
A Treasure Trove of Species...
Bukit Timah has been the focus of attention for many scientists, not only because it is a rare example of a rainforest that has managed to survive while completely surrounded by urban development, but also because of the extremely rich diversity of flora and fauna that still exists within the nature reserve. This richness in plant and animal life has been noted ever since the 19th Century.
Back in 1854, the world-famous English naturalist Alfred Russel Wallace visited Singapore to collect beetles. He spent a lot of his time in the vicinity of Bukit Timah, which proved to be an extremely productive place for him:
"Insects were exceedingly abundant and very interesting, and every day furnished scores of new and curious forms. In about two months I obtained no less than 700 species of beetles, a large proportion of which were quite new, and among them were 130 distinct kinds of the elegant Longicorns (Cerambycidae), so much esteemed by collectors. Almost all of these were collected in one patch of jungle, not more than a square mile in extent, and in all my subsequent travels in the East I rarely if ever met with so productive a spot."
"There are always a few tigers roaming about Singapore, and they kill on an average a Chinaman every day, principally those who work on the gambir plantations, which are always made in newly-cleared jungle. We heard a tiger roar once or twice in the evening, and it was rather nervous work hunting for insects among the fallen trunks and old sawpits, when one of these savage animals might be lurking close by, waiting an opportunity to spring upon us."
Although we have lost a lot of our larger animal species, there is a lot that still survives within our remaining rainforests. Today, it is estimated that BTNR is home to more than 840 flowering plant species and more than 500 species of animals. Scientists are still discovering new species previously unknown to science, and it appears that many of the species living in the BTNR and CCNR are found only in Singapore, and nowhere else in the world!
BTNR: Biodiversity
Within the forest of BTNR, it is dark and cool as the trees form a continuous canopy; very little sunlight reaches the forest floor. On the forest floor, only plants that do not need a lot of sunlight can survive.
Among the various species of plants include hardwood trees such as seraya, keruing and meranti. Palms, rattans, fig trees, lianas, vines and epiphytes are a few other examples of the rich diversity of plant species that can be found within the forest.
The animal life is also extremely rich; most visitors to the reserve will be able to spot one of the most common forest creatures, the long-tailed macaque. Other animals commonly seen include the plantain squirrel, slender squirrel, and common tree shrew. The colugo, also mistakenly known as the flying lemur, is a shy and nocturnal creature, but is often spotted by the sharp-eyed visitor. The forest is also home to many rare and endangered species, such as the lesser mousedeer, Sunda pangolin, and slow loris.
A large proportion of our native bird species are found within the rainforests of BTNR and CCNR, and virtually nowhere else in Singapore. Similarly, the forest is the habitat for a large number of species of lizards, frogs, and snakes that depend heavily on pristine, undisturbed rainforest. The rainforest is also home to a great diversity of insects and spiders; it is impossible not to hear the incessant call of the cicadas, and it is common to spot the huge webs spun by the golden orb web spider. Small streams flowing through the nature reserves are the last refuge for many native fish and other aquatic lifeforms such as freshwater prawns and crabs. In fact, Singapore has three endemic species of freshwater crab found only within streams in BTNR and CCNR. These species are found exclusively in pristine and undisturbed streams that flow through these nature reserves, and are found nowhere else in the world.
Importance of Tropical Rainforests in Singapore
Even though we do not possess very large areas of tropical rainforests, as compared to other countries like Malaysia, Indonesia, Congo and Brazil, our few remaining rainforests are still very important, for various reasons.
- Tropical rainforests have taken hundreds of years to develop and once cleared, they are almost impossible to replace. There are many species of plant and animal in the rainforests, most of which are found nowhere else in the world. And when they are destroyed, some species may become extinct and be lost forever. These include plants with medicinal value which have not even been identified and tested. So, rainforests in Singapore now perform the very important role of providing a place for many species to thrive and grow.
- Rainforests in Singapore also provide us with an idea of what Singapore was like at the beginning of the nineteenth century. Singapore was once covered by tropical rainforests. Hence, by looking at the rainforests now, we get a glimpse of what Singapore might have been like then.
- The rainforests form our water catchment areas. When rain falls, the rainwater is trapped by some of the leaves on the trees. The rainwater then drains slowly into the ground and may be collected in the nearby reservoirs. In this way rainforests help us 'catch' the rain and add to our water supply.
- As Singapore becomes increasingly built up, rainforests act as giant 'lungs' by absorbing large amounts of carbon dioxide and producing oxygen in exhange.
- The rainforests are beautiful and scenic, with fresh air and natural surroundings. They provide us with a peaceful alternative to the busy city, and these last bastions of wilderness are places of peace and quiet where Singaporeans can go to enjoy and appreciate nature at its best. They can also be a tourist attraction.
- The rainforests are a legacy of our natural heritage, and it is important to protect and conserve them, keeping them intact for the country's future generations to learn and appreciate the richness of our country's heritage.
National Parks Board: Bukit Timah Nature Reserve
wildsingapore: Bukit Timah Nature Reserve
Ecology Asia: Bukit Timah Nature Reserve - a precious remnant of primary rainforest
Singapore's vest-pocket park: a rainforest survives within sight of skyscrapers
An Inordinate Fondness for Beetles
The Prowling Naturalist: Bukit Timah I: Alfred Russel Wallace in the Malay Archipelago
The Prowling Naturalist: Bukit Timah II: Visiting the Reserve
New Guinea and Singapore
Many of you have asked me questions regarding the way of life of the tribes living in Papua New Guinea and Irian Jaya, compared to the way of life of people living in Singapore. The Blue Marble textbook is quite unclear on this, so I'll try my best to condense the differences into a few points that you might find easier to digest.
The people in New Guinea live in a forest environment. Their activities have very little impact on the physical environment. They do not greatly modify the environment, besides clearing small patches of forest to grow crops.
The people in Singapore however live in an urban environment, which is an example of a human environment. Over the years, the original physical environment has been changed and converted into a human environment. The physical environment has been greatly modified in order to create the modern urban environment. Here, the human features dominate the landscape.
The people who live in New Guinea depend largely on shifting cultivation, where they clear small areas of forest and grow crops for their own use. The forest which they live in provides them with all that they need: land for farming, wild animals for them to hunt, materials for shelters, clothing and tools. Technology is very primitive compared to that of Singapore.
In Singapore, the people do not depend so much on the physical environment around them. Instead, resources are imported from all over the world. Singapore does not depend very heavily on farming, but where there is farming, it is high-technology and not as primitive as the shifting cultivation adopted by the New Guinea tribes. Technology is very advanced, and is extremely important in all aspects of the daily lives of people living in Singapore.
The people in New Guinea have learned to adapt to the physical environment. Their lifestyles are affected by the physical environment.
The people in Singapore have changed the physical environment to suit their needs. The physical environment is affected by their lifestyles.
Note: New Guinea is made up of several political entities. It consists of the country of Papua New Guinea, and the Indonesian provinces formerly collectively known as Irian Jaya. Check this link for details.
The people in New Guinea live in a forest environment. Their activities have very little impact on the physical environment. They do not greatly modify the environment, besides clearing small patches of forest to grow crops.
The people in Singapore however live in an urban environment, which is an example of a human environment. Over the years, the original physical environment has been changed and converted into a human environment. The physical environment has been greatly modified in order to create the modern urban environment. Here, the human features dominate the landscape.
The people who live in New Guinea depend largely on shifting cultivation, where they clear small areas of forest and grow crops for their own use. The forest which they live in provides them with all that they need: land for farming, wild animals for them to hunt, materials for shelters, clothing and tools. Technology is very primitive compared to that of Singapore.
In Singapore, the people do not depend so much on the physical environment around them. Instead, resources are imported from all over the world. Singapore does not depend very heavily on farming, but where there is farming, it is high-technology and not as primitive as the shifting cultivation adopted by the New Guinea tribes. Technology is very advanced, and is extremely important in all aspects of the daily lives of people living in Singapore.
The people in New Guinea have learned to adapt to the physical environment. Their lifestyles are affected by the physical environment.
The people in Singapore have changed the physical environment to suit their needs. The physical environment is affected by their lifestyles.
Note: New Guinea is made up of several political entities. It consists of the country of Papua New Guinea, and the Indonesian provinces formerly collectively known as Irian Jaya. Check this link for details.
Exam Format
Section A: Multiple-Choice Questions [20 marks]
Section B: Mapwork [10 marks]
Section C: Basic Techniques [10 marks]
Section D: Structured Questions [60 marks] Five questions will be provided; choose only FOUR to answer.
Other important links:
Things to bring for the exam
Please remember to bring the following items to the exam.
I must also stress the importance of writing your answers in blue or black ink ONLY. Strictly NO funny colours likegreen, purple, pink or red will be accepted. Even bright blue is pushing the limit a little. I can promise all of you that if I see any answer scripts written in colours other than black or blue, your answer script goes straight into the trash. And even if I deign to be somewhat more merciful, I can still penalise you for not following instructions. I'm not sure how different things are from my time, but back in my time, any pupil who tried to be funny and submitted homework or test papers written in colours other than blue or black was seriously asking for trouble. =P
Besides that, happy studying, and good luck for the exams! =)
- String: While string will be provided for you to tie your writing paper together, there might not be enough string for everyone, or the string provided might be too short for you to measure distances on the topographical map. So please bring your own string. I can recommend that you do what I did back when I was still in secondary school (not too long ago): I brought an entire spool of thread with me in my pencil case.
- Ruler: It amazes me how many students can forget to bring something as essential as a ruler. If you don't have a ruler, how are you going to make sure that your lines are straight? And even more importantly, how are you going to measure distances?
- Protractor: Without a protractor, you will definitely not be able to measure bearing for your mapwork.
- Other stationery such as pens, pencils, correction fluid, erasers, etc. Borrowing from your neighbours will not be allowed during the examination.
I must also stress the importance of writing your answers in blue or black ink ONLY. Strictly NO funny colours like
Besides that, happy studying, and good luck for the exams! =)
Geology
Since one of you has recommended that I put up more hints and tips on Landforms and Rocks (Chapter 7), and also requested more information on fold mountains, I'll cover some of the more important aspects of the chapter here.
As we all know, the Earth has several layers:
(i) Crust
(ii) Mantle
(iii) Core
Examples of fold mountains include:
1. Igneous rock
Igneous rocks are formed by the cooling or hardening of magma and lava beneath or on the Earth's surface.
(i) When magma cools and hardens slowly in the Earth's crust, coarse-grained igneous rocks are formed. Granite is an example of a coarse-grained igneous rock; the individual grains and crystals in the rocks can be seen by the naked eye.
(ii) When lava cools and hardens quickly on the Earth's surface, fine-grained igneous rocks are formed. Basalt is an example of a fine-grained igneous rock; the individual grains and crystals in the rocks are too small to be seen by the naked eye.
2. Sedimentary rock
Sedimentary rocks are formed from the deposition and accumulation of sediments. As the sediments pile up in layers, the weight of the layers on top compresses the layers below. The pressure cements the layers of sediments together, forming sedimentary rock.
Like igneous rocks, sedimentary rocks can be coarse-grained or fine-grained.
(i) Coarse-grained sedimentary rocks are formed from deposits of larger sediments such as sand, gravel and pebbles.
(ii) Fine-grained sedimentary rocks are formed from very fine sediments such as silt, mud and clay.
Weathering involves either the disintegration or decomposition of the rock in situ. No movement of loose rock material is involved. In other words, the rock breaks apart but is not transported anywhere. The major agents of weathering include large changes in temperature, rainwater, freezing water, and plants.
1) Large changes in temperature: Changes in temperature cause the surface of the rock to expand and contract more than the interior of the rock. This weakens the rock and causes cracks to form.
2) Rainwater: As rain falls, the rainwater combines with carbon dioxide in the air to form a very weak acid, which dissolves certain minerals in the rock. Limestone and marble are especially vulnerable to slowly dissolving away in rainwater, forming caves and other features.
3) Freezing water: Water may enter cracks in rocks. In areas where the temperature falls below the freezing point of water, the water will turn into ice when it is cold enough. Water expands as it freezes. The ice now exerts pressure on the walls of the crack, pushing them further apart and widening the crack. Over time, the crack becomes wider and the rock may break apart.
4) Plants: Plants that grow in cracks in rocks can force these cracks to widen due to the roots growing into the rock.
Erosion refers to the wearing away and removal of weathered rock. Movement of loose rock material is involved. In other words, the rock is being worn away while at the same time, loose material is being transported away. The main agents of erosion are water, waves, ice and wind.
1) Water: As water flows over rocks, it will wash away loose material. Also, as water flows, sediments being carried by the water (such as sand grains and pebbles) will scour and scrape against the rocks, eroding away at the material.
2) Waves: Strong waves carry a lot of energy, and the pounding of these waves can remove large amounts of rock. Also, sand, gravel and pebbles carried by these waves can grind and wear away at the rock.
3) Ice: Glaciers are rivers of ice found in mountainous and polar regions. They move extremely slowly, but they pick up and carry away pieces of rock. Also, just like in a river, the material carried by a glacier can scrape and erode away at the surrounding rocks.
4) Wind: In dry areas, winds are strong, and there is little vegetation to hold the loose soil together. Hence materials such as sand and soil will be picked up and carried away by the wind. Also, in strong wind, the sand and soil picked up by the wind will be blasted at rocks, smoothening and polishing these surfaces.
- The Earth
As we all know, the Earth has several layers:
(i) Crust
(ii) Mantle
(iii) Core
- Landforms: Fold Mountains
Examples of fold mountains include:
- Alps in Europe
- Himalayas in Asia
- Rocky Mountains in North America
- Andes in South America
- Atlas Mountains in north Africa
- Rocks
1. Igneous rock
Igneous rocks are formed by the cooling or hardening of magma and lava beneath or on the Earth's surface.
(i) When magma cools and hardens slowly in the Earth's crust, coarse-grained igneous rocks are formed. Granite is an example of a coarse-grained igneous rock; the individual grains and crystals in the rocks can be seen by the naked eye.
(ii) When lava cools and hardens quickly on the Earth's surface, fine-grained igneous rocks are formed. Basalt is an example of a fine-grained igneous rock; the individual grains and crystals in the rocks are too small to be seen by the naked eye.
2. Sedimentary rock
Sedimentary rocks are formed from the deposition and accumulation of sediments. As the sediments pile up in layers, the weight of the layers on top compresses the layers below. The pressure cements the layers of sediments together, forming sedimentary rock.
Like igneous rocks, sedimentary rocks can be coarse-grained or fine-grained.
(i) Coarse-grained sedimentary rocks are formed from deposits of larger sediments such as sand, gravel and pebbles.
(ii) Fine-grained sedimentary rocks are formed from very fine sediments such as silt, mud and clay.
Limestone however, is formed from the fossilised remains of ancient plants and animals.
3. Metamorphic rock
Sometimes, under extreme heat and pressure, igneous and sedimentary rocks may be completely transformed into a different rock type altogether - metamorphic rock.
- Weathering & Erosion
Weathering involves either the disintegration or decomposition of the rock in situ. No movement of loose rock material is involved. In other words, the rock breaks apart but is not transported anywhere. The major agents of weathering include large changes in temperature, rainwater, freezing water, and plants.
1) Large changes in temperature: Changes in temperature cause the surface of the rock to expand and contract more than the interior of the rock. This weakens the rock and causes cracks to form.
2) Rainwater: As rain falls, the rainwater combines with carbon dioxide in the air to form a very weak acid, which dissolves certain minerals in the rock. Limestone and marble are especially vulnerable to slowly dissolving away in rainwater, forming caves and other features.
3) Freezing water: Water may enter cracks in rocks. In areas where the temperature falls below the freezing point of water, the water will turn into ice when it is cold enough. Water expands as it freezes. The ice now exerts pressure on the walls of the crack, pushing them further apart and widening the crack. Over time, the crack becomes wider and the rock may break apart.
4) Plants: Plants that grow in cracks in rocks can force these cracks to widen due to the roots growing into the rock.
Erosion refers to the wearing away and removal of weathered rock. Movement of loose rock material is involved. In other words, the rock is being worn away while at the same time, loose material is being transported away. The main agents of erosion are water, waves, ice and wind.
1) Water: As water flows over rocks, it will wash away loose material. Also, as water flows, sediments being carried by the water (such as sand grains and pebbles) will scour and scrape against the rocks, eroding away at the material.
2) Waves: Strong waves carry a lot of energy, and the pounding of these waves can remove large amounts of rock. Also, sand, gravel and pebbles carried by these waves can grind and wear away at the rock.
3) Ice: Glaciers are rivers of ice found in mountainous and polar regions. They move extremely slowly, but they pick up and carry away pieces of rock. Also, just like in a river, the material carried by a glacier can scrape and erode away at the surrounding rocks.
4) Wind: In dry areas, winds are strong, and there is little vegetation to hold the loose soil together. Hence materials such as sand and soil will be picked up and carried away by the wind. Also, in strong wind, the sand and soil picked up by the wind will be blasted at rocks, smoothening and polishing these surfaces.
Monday, 1 October 2007
Where is Irian Jaya?
Some of you might be a little confused by one of the hints I provided:
Case Study: Way of life of the people living in Irian Jaya and Papua New Guinea, compared to the way of life of people living in Singapore* (pgs. 37–41)
Many of you have asked me, "Mr. Kwan, where is Irian Jaya?"
Google is there for a reason. =P
This is a map of the island of New Guinea:
New Guinea is split politically into two roughly equal halves. The eastern half belongs to the independent country of Papua New Guinea (which you would have read about in your textbook). The western half consists of the Indonesian provinces of Papua and West Papua.
Now this is the interesting part. Up until very recently, until 2003 at least, Papua and West Papua were a single province, and the entire province was known as Irian Jaya.
(I hope this is one of those moments when a lightbulb goes off in your head)
Even though the two halves of New Guinea belong to two separate political entities, they are very similar. Similar environment, similar lifestyles, the only major thing that separates them is that there is an imaginary line which separates Papua New Guinea from the half formerly known as Irian Jaya.
So basically, when you see a question in the exam asking you about the way of life of tribes in Irian Jaya, just substitute them with the folks living just across the border, in Papua New Guinea. (^_')
Case Study: Way of life of the people living in Irian Jaya and Papua New Guinea, compared to the way of life of people living in Singapore* (pgs. 37–41)
Many of you have asked me, "Mr. Kwan, where is Irian Jaya?"
Google is there for a reason. =P
This is a map of the island of New Guinea:
New Guinea is split politically into two roughly equal halves. The eastern half belongs to the independent country of Papua New Guinea (which you would have read about in your textbook). The western half consists of the Indonesian provinces of Papua and West Papua.
Now this is the interesting part. Up until very recently, until 2003 at least, Papua and West Papua were a single province, and the entire province was known as Irian Jaya.
(I hope this is one of those moments when a lightbulb goes off in your head)
Even though the two halves of New Guinea belong to two separate political entities, they are very similar. Similar environment, similar lifestyles, the only major thing that separates them is that there is an imaginary line which separates Papua New Guinea from the half formerly known as Irian Jaya.
So basically, when you see a question in the exam asking you about the way of life of tribes in Irian Jaya, just substitute them with the folks living just across the border, in Papua New Guinea. (^_')
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