1.

All the living organisms are basically made up of C,N,S,P,H and O. How they enter the living forms?

Answer» Most of these elements first enter plants and become components of organic material during the process of photosynthesis. Thus, they enter from air (`CO_(2)`) water `(H_(2)O)` and ions (N,S,P) from the soil. From plants the chemicals pass on to other organisms through the food chains.


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