Question

Which one was ABSENT on earth in the early days of origin of life?
a)Co2 b)CH4 c)NH3 d)O2 e)H2
PLS HELP!!​

Answer 1

Answer:

c) NH3 (not completely sure, try googling it)

Answer 2

Answer:

I think answer is D.

Explanation:

Because Early there were so so many gases but oxygen is abscent.Any oxygen present would have reacted with the methane and hydrogen, forming carbon dioxide and water.Hence We can say that oxygen is absent in the early days