Q57 of 163 Page 242

The ten per cent law is associated with

According to ten percent law, 10% of total energy available at a trophic level is transferred to the next trophic level. Transfer of energy begins from producers and continues up to decomposers in a food chain.

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Which of the following is the best method to dispose of biological wastes from hospitals?

 56

In an ecosystem:

(i) The flow of energy is unidirectional


(ii) The flow of materials is unidirectional


(iii) The flow of materials is cyclic


(iv) The flow of energy is cyclic

 58

The harmful chemical which is accumulating in human beings through food chain is:

 59

O2 is converted into O3 by the action of: