A.Oxygen
B.Nittogen
C.Water
D.Carbon
Related Mcqs:
- According to most accepted theories, the atmosphere of earth before origin of life consisted of a mixture of:
- Which of the following is likely to have been absent in free form at the time of origin of life:
- To prove that organic molecules formed in the primitive ocean were respobsible for origin of life on earth, Millar carried out their synthesis from:
- The most abundant gases in the earth’s atmosphere by volume are ____________.
- When oil and gas resources are burnt they kill many forests and lakes by __________?
- The presence of high coliform counts in water indicates __________?
- Which of the following gases has an important role in maintaining atmospheric temperature?
- Trees play an important role in:
- There is no life on Moon because there is deficiency of:
- Which of the following gases are mainly responsible for the atmospheric greenhouse effect in the earth’s atmosphere?
