Q1 of 50 Page 476

Organisms of a higher trophic level which feed on several types of organisms belonging to a lower trophic level constitute the:

A network of different food chain operating at the same time is called food web. In food web organisms of a higher trophic level which feed on several types of organisms belonging to a lower trophic level.

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26

Show steps of food chains operating in:

(a) Forests


(b) Grasslands


(c) Ponds.

 27

What are the problems caused by the non-biodegradable wastes that we generate?

 2

Flow of energy in an ecosystem is always:

 3

Disposable plastic plates should not be used because: