3) People (pollute / pollution) the environment with wastes.
4) Is it possible to (predict / prediction) our future?
5) There are a lot of (ecology / ecological) problems that we must solve.
6) Water in rivers and seas may be polluted by (chemistry / chemical) waste.
7) Human beings (destroy / destruction) many species of animals and birds.
8) Some (geography / geographical) names are used with the article the.
9) (Biology / Biological) is my favourite school subject.
10) (Nature / Natural) disasters can be very dangerous.
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