The-Living-World Question 702
According to one of the most widely accepted theories, the earth’s atmosphere, before any life had originated on this planet, consisted of a mixture of [CPMT 1981, 84, 2002]
Options:
A) Water vapours, $ H_2 $, $ NH_3 $ and $ CH_4 $
B) $ H_2,CO_2,NH_3 $ and $ CH_4 $
C) $ O_2,NH_3,CH_4 $ and water vapours
D) Ozone, $ CH_4, O_2 $ and water vapours
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Answer:
Correct Answer: A
BETA
