Question

The four elements called "big-four" which make up 95% of all elements found in a living system are

Answer 1

Answer:

'c,h,o,n'

Explanation:

carbon

oxygen

nitrogen

hydrogen

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Answer 2

The four elements called "big-four" which make up 95% of all elements found in a living system are C, H, O, N.

C = Carbon

H = Hydrogen

O = Oxygen

N = Nitrogen

This four elements are called 'big four' beacuse they are the building block which makes life possible.