Which of the following is true of nitrogen?
A) The human body obtains the nitrogen it needs from the air.
B) There is very little nitrogen in the atmosphere.
C) The nitrogen the human body needs is derived from food-not the air.
D) Nitrogen is a variable gas.

Question

Quizplus · Accepted Answer

Nitrogen is not directly obtained by the human body from the air, but rather from the consumption of nitrogen-containing compounds in food. While nitrogen makes up approximately 78% of Earth's atmosphere, it is in a form (N2) that is not readily used by most living organisms. Therefore, option A and B are incorrect. Option D is also incorrect as nitrogen is a non-variable gas, meaning its chemical properties do not change under normal conditions.

Which of the Following Is True of Nitrogen