EVOLUTION
THE ORIGIN OF LIFE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following was probably not present in the atmosphere of the primitive Earth?
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Methane
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Oxygen
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Water
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Carbon dioxide
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Explanation:
Detailed explanation-1: -So the correct answer is ‘Oxygen’.
Detailed explanation-2: -Oxygen is produced by plants by the process of photosynthesis, earlier there were no plants and vegetation, which’s why no oxygen in the early atmosphere.
Detailed explanation-3: -Considering the atmosphere of the primitive earth to have contained water vapor, carbon dioxide, carbon monoxide, methane, and ammonia and/or nitrogen, then in the presence of an energy source, such as sunlight or lightning, a number of small molecules like hydrogen cyanide, HCN, are formed.
There is 1 question to complete.