Pecies itself.EXERCISE
Task 1
Read the text and answer the questions!
Rainforests are forests characterized by high rainfall, with definitions setting minimum normal
annual rainfall between 1750-2000 mm (68–78 inches). The monsoon trough, alternately known as
the inter tropical convergence zone, plays a significant role in creating Earth's tropical rain forests.
A total of 40 to 75% of all species on the world's habitats are indigenous to the rainforests.
It has been estimated that many millions of species of plants, insects, and microorganisms are still
undiscovered. Tropical rainforests have been called the "jewels of the Earth", and the world's
largest pharmacy", because over one quarter of natural medicines have been discovered there.
Rainforests are also responsible for 28% of the world's oxygen turn over, often misunderstood
as oxygen production, processing it through photosynthesis from carbon dioxide and storing it
as carbon through bio-sequestration. The undergrowth in a rainforest is restricted in many areas
by the lack of sunlight at ground level. This makes it possible to walk through the forest. If the
leaf canopy is destroyed or thinned, the ground beneath is soon colonized by a dense, tangled
growth of vines, shrubs, and small trees called a jungle. There are two types of rainforest, tropical
rainforest and temperate rainforest.
Questions:
1. What has become the characteristic of a rainforest?
2. How much is the setting of minimum normal annual rainfall?
3. How many percents of earth's species indigenous to the rainforest?
4. Why is also rainforest called as world largest pharmacy?
5. How many kinds of rainforest are mentioned in the text?
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