Question

Scientists believe that early plants released oxygen in a process called photosynthesis. Where did the carbon dioxide needed for photosynthesis come from in the early atmosphere?
A) Volcanoes released carbon dioxide.
B) The Earth captured carbon dioxide from space with its gravity.
C) Water molecules on the Earth were broken to release carbon dioxide.
D) Early bacteria and plants released carbon dioxide as well as oxygen when they performed photosynthesis.

Answer 1

Answer:

option D

early bacteria and plants released carbon dioxide as well as oxygen when they performed photosynthesis.

hope it may helps you

Answer 2

Answer:

A) Volcanoes released carbon dioxide

Explanation:

I think the first answer is correct because the earth cannot capture CO2 from space as there is no air in the outer space. Moreover, water molecules cannot be broken to release CO2 as there is no carbon in H2O. That is why the first option is correct.

Hope it helps you :)

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