question_answer

Give reasons:

(a) Man modifies his environment.

(b) Plants and animals depend on each other.

Answer:

(a) Man modifies his environment to fulfil his needs and make his life comfortable. He also modifies his environment to adapt himself to the natural surroundings.

(b) Plants and animals depend on each other for their own sake. Plants release oxygen during the process of photosynthesis that animals breathe in, and absorb carbon dioxide in the process of photosynthesis that animals release.