Question

Which gas in the atmosphere made the development of eukaryotic cells possible?


A.
carbon dioxide


B.
oxygen


C.
nitrogen


D.
methane

Answer 1

B

Answer 2

@shreehari499

Answer 3

Ok..NOO its not oxygen..I think its CO2..:)

Answer 4

it is A ?

Answer 5

Is it 4 a test? @WatchDogs

Answer 6

no

Answer 7

Ok then go 4 CO2...but i do not have any specific reason to give the answer...I think i read it somewhere...@Abhisar ..How do you support your answer?

Answer 8

Initially at the time of origin, primitive atmosphere was reducing and oxygen free (almost). But after the development of prokaryotes like (BGA) it started turning oxidising (oxygen revolution, due to photosynthesis). This made environment suitable for aerobic respiration and hence paved way for the development of eukaryotes

Answer 9

Oh god! Then go 4 oxygen @WatchDogs !! :)

Answer 10

ok