Question
Question: How has the free \(O_{2}\) been released into the earth's atmosphere whereas there was no free \(O_{...
How has the free O2 been released into the earth's atmosphere whereas there was no free O2 at the time of origin of life
A
By catabolic activity of animals
B
By photosynthetic activity
C
By heating of the earth
D
None of the above
Answer
By photosynthetic activity