Question

Nitrogen is a poisonous gas because animals die in their presence why?

Answer 1

Nitrogen occurs in all organisms, primarily in amino acids (and thus proteins), in the nucleic acids (DNA and RNA) and in the energy transfer molecule adenosine triphosphate. Hence, it is not poisonous.

Moreover, 78% of air constitutes nitrogen and no living thing dies. That means nitrogen is not a poisonous gas.

Hence, the given statement is false.