Among all the gases present in the air, which is most important and critical for our survival?
Carbon dioxide
Oxygen
Nitrogen
Hydrogen
Oxygen gas is most important and critical for our survival.
Question 1 Air is a mixture of various gases. One of the gases constitutes 21% part of the air and is essential for the survival of human beings. This gas is: (a) Nitrogen (b) Oxygen (c) Ozone (d) Argon
Which of the following is the most important thing for survival of living organisms?