SATHEE: The-Living-World Question 661

The-Living-World Question 661

Question: How has the free $ O_2 $ been released into the earth’s atmosphere whereas there was no free $ O_2 $ at the time of origin of life

Options:

A) By catabolic activity of animals

B) By photosynthetic activity

C) By heating of the earth

D) None of the above

Show Answer

Answer:

Correct Answer: B

Solution:

BETA

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The-Living-World Question 661

Question: How has the free $ O_2 $ been released into the earth’s atmosphere whereas there was no free $ O_2 $ at the time of origin of life

Options:

Answer:

Solution:

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