Academic IELTS Reading Practice - 25 - Beneath The Canopy
Beneath The Canopy
1. The world's tropical rainforests comprise some
6% of the Earth's land area and contain more than half of all known
life forms, or a conservative estimate of about 30 million species of
plants and animals. Some experts estimate there could be two or even
three times as many species hidden within these complex and fast-
disappearing ecosystems; scientists will probably never know for
certain, so vast is the amount of study required.
2. Time is running out for biological research.
Commercial development is responsible for the loss of about 17 million
hectares of virgin rainforest each year - a figure approximating 1% of
what remains of the world's rainforests.
3. The current devastation of once impenetrable
rainforest is of particular concern because, although new tree growth
may in time repopulate felled areas, the biologically diverse storehouse
of flora and fauna is gone forever. Losing this bountiful inheritance,
which took millions of years to reach its present highly evolved state,
would be an unparalleled act of human stupidity.
would be an unparalleled act of human stupidity.
4. Chemical compounds that might be extracted from
yet-to-be-discovered species hidden beneath the tree canopy could assist
in the treatment of disease or help to control fertility.
Conservationists point out that important medical discoveries have
already been made from material found in tropical rainforests. The drug
aspirin, now synthesised, was originally found in the bark of a
rainforest tree. Two of the most potent anti- cancer drugs derive from
the rosy periwinkle discovered in the 1950s in the tropical rainforests
of Madagascar.
5. The rewards of discovery are potentially enormous,
yet the outlook is bleak. Timber-rich countries mired in debt, view
potential financial gain decades into the future as less attractive than
short-term profit from logging. Cataloguing species and analysing
newly-found substances takes time and money, both of which are in short
supply.
6. The developed world takes every opportunity to
lecture countries which are the guardians of rainforest . Rich nations
exhort them to preserve and care for what is left, ignoring the fact
that their wealth was in large part due to the exploitation of their own
natural world.
7. It is often forgotten that forests once covered most
of Europe. Large tracts of forest were destroyed over the centuries for
the same reason that the remaining rainforests are now being felled -
timber. As well as providing material for housing, it enabled wealthy
nations to build large navies and shipping fleets with which to continue
their plunder of the world's resources.
9. Also, cataloguing tropical biodiversity involves
much more than a search for medically useful and therefore commercially
viable drugs. Painstaking biological fieldwork helps to build immense
databases of genetic, chemical and behavioural information that will be
of benefit only to those countries developed enough to use them.
You are advised to spend about 8 minutes on Questions 16-20.
Refer to Reading Passage 15 "Beneath the Canopy" and answer the following questions. The left-hand column contains quotations taken directly from the reading passage. The right-hand column contains explanations of those quotations. Match each quotation with the correct explanation. Select from the choices A - F below and write your answers in boxes 16 - 20 on your Answer Sheet.
Example: ' a conservative estimate' ......B......
Quotation
|
Explanation
|
Ex: 'a conservative estimate' (paragraph 1)
16. 'biologically diverse storehouse of flora and fauna' (paragraph 3)
17. 'timber-rich countries mired in debt' (paragraph 5)
18. 'exploitation of their own natural world' (paragraph 6)
19. 'benefit financially from extended bioprospecting of their rainforests' (paragraph 8)
20. 'loss of biodiversity' (paragraph 12)
|
A. with many trees but few financial resources
B. purposely low and cautious reckoning
C. large-scale use of plant and wildlife
D. profit from an analysis of the plant and animal life
E. wealth of plants and animals
F. being less rich in natural wealth
|
Questions 21-23
You are advised to spend about 5 minutes on Questions 21-23.Refer to Reading Passage 2, and look at Questions 21-23 below. Write your answers in boxes 21 - 23 on your Answer Sheet.
Q21. How many medical drug discoveries does the article mention?
Q22. What two shortages are given as the reason for the writer's pessimistic outlook?
Q23. Who will most likely benefit from the bioprospecting of developing countries' rainforests?
Questions 24-26
You are advised to spend about 7 minutes on Questions 24-26. Refer to Reading Passage 15, and decide which of the answers best completes the sentences.
Write your answers in boxes 24-26 on your Answer Sheet.
Q 24. The amount of rainforest destroyed annually is:
a) approximately 6% of the Earth's land area
b) such that it will only take 100 years to lose all the forests
c) increasing at an alarming rate
d) responsible for commercial development
Q 25. In Borneo in the late 1990s:
a) burning forest fires caused air pollution problems as far away as Europe
b) reckless logging resulted from burning forest fires
c) fires were lit to play the game of havoc
d) none of the above
Q 26. Many so-called "lost" tribes of certain rainforests:
a) have been destroyed by contact with the modern world
b) do not know how to exploit the rainforest without causing harm to the environment
c) are still lost inside the rainforest
d) must listen or they will impact on the entire human race.
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