Overview
1)which gas is present in the greatest amount in our atmosphere?
2)What would happen if our planet had pure oxygen to breath?
3)How do human & animals get the nitrogen they need to build proteins?
4)What is air?
Geology · Studypool
Geology · Studypool
1)which gas is present in the greatest amount in our atmosphere?
2)What would happen if our planet had pure oxygen to breath?
3)How do human & animals get the nitrogen they need to build proteins?
4)What is air?