1) The clearing, or cutting down, of forests, is called____________________ a) Aforestation b) Deforestation c) Dam 2) No rain due to lack of water is ________ a) Pollution b) Flood c) Drought 3) Environmental changes don't affect the living organisms a) Yes b) No c) Both are correct 4) An overflow of a large amount of water beyond its normal limits is ________ a) Flood b) Earthquake c) Drought

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