A.Supply of clean air
B.They absorb carbon-dioxide from the atmosphere and release oxygen
C.Both (a) & (b)
D.None of these
Related Mcqs:
- Which of the following gases has an important role in maintaining atmospheric temperature?
- The most abundant gas in the stratosphere is __________?
- Which of the following nephrons play important role in production of concentrated urine??
- Which conjegated molecules play important role in gene expression___________??
- Acid rain mainly result from __________?
- Antibodies play important role against microorganisms and other pathogens to which type of proteins do they belong________??
- Which of the following gases are mainly responsible for the atmospheric greenhouse effect in the earth’s atmosphere?
- The most abundant gases in the earth’s atmosphere by volume are ____________.
- Biogas is composed of __________?
- Arrange the following in ascending order of their occurrence in the atmosphere: (1) oxygen (2) Nitrogen (3) Carbon dioxide (4) Argon
