15. Endangered species are plant and animal species which are on danger of extinction.
A B C D
Choose the word or phrase which best fits each gap of the passage.
Tropical forests have (16) ……….. us with very many sorts of plants for food, medicine and industry.
They also reduce (17) ……….. and droughts, keep water clean, and slow down the Green house Effect.
However, the tropical forests are being (18) ……….. to make rooms for things like farms, ranches, mines
and hydroelectric (19) ………… About twenty million hectares (20) ……….. each year- an area more than
twice the size of Austria.
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