It is believed the early atmosphere was formed from gases given out by volcanoes. Thus the atmosphere was mainly CO2. Then as the earth cooled down due to less CO2, water vapour condensed to form oceans. The reduction in C02 levels was due to photosynthesis from plants which converted it into oxygen. Some CO2 was locked into sedimentary rocks and some dissolved into the oceans.

Awais's profile picture
Verified
Awais Naveed
·

451 students helped

·

5 months ago


Similar questions in Physics

Maths

Asked by Bhairavi

Inequalities

English

Asked by Cristina

What is a feminine rhyme?

English

Asked by Cristina

What is a masculine rhyme?

French

Asked by Wenli

This is my questions for you

Tutors who could help with undefined

Tutors who could help with undefined