Which of the following gases is crucial to the existence of all forms of life?
A)nitrogen
B)oxygen
C)carbon dioxide
D)argon

Question

Quizplus · Accepted Answer

Oxygen is crucial to the existence of all forms of life as it is required for respiration, the process by which organisms release energy from their food. Without oxygen, organisms cannot generate the energy necessary for their survival. Nitrogen and carbon dioxide also play important roles in the environment, but they are not as essential for the survival of all forms of life. Argon, although present in the atmosphere, does not play a significant role in supporting life.

Which of the Following Gases Is Crucial to the Existence