Register
The large amount of free oxygen in earth's present atmosphere is primarily a result of
210k views
2 votes
The large amount of free oxygen in earth's present atmosphere is primarily a result of

User Cheriese
by
7.5k points

1 Answer

4 votes
a biological process such as photosynthesis. 13. Billions of years ago, Earth's atmosphere was composed primarily of carbon dioxide
User NareshRavva
by
8.6k points
← Prev Question Next Question →

No related questions found

Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Other Questions

Which of the objects is living or nonliving: Bacteria, virus, moss, you, a lemon seed, the air, bread, lettuce and rocks?
Why aren't all minerals gemstones?
Two methods of active transport
How can paleontologists help us understand the past
What is the phenotype of a heterozygous person using T for tall and t for short
Link Copied!