1.

Many elements are found in living organisms either free or in the form of compounds. One of the following is not found in living organisms. (a) Silicon (b) Magnesium (c) Iron (c) Sodium

Answer»

Many elements are found in living organisms either free or in the form of compounds. One of the following is not found in living organisms.

(a) Silicon (b) Magnesium

(c) Iron (c) Sodium



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