Q. 185.0( 1 Vote )

(a) From the foll

Answer :

(a)



(b) Pesticides are not easily metabolised and hence accumulate. Upon consumption by the higher trophic levels their concentration will increase across the trophic levels. Hence, we will find biomagnification across trophic level. The levels will be highest in humans.


(c)



OR


(a) Two harmful effects of using plastic bag:


1. It cannot decompose


2.it produce harmful gasses on burning


To alternative of plastic bags:


1. Jute bags


2. Cotton handmade bags


(b) Two practices that can be followed to dispose off the waste produced in our homes:


1. Practice to recycling the waste


2. By reusing it


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