Question

What is the percentage of oxygen in the Earth's atmosphere?

Answer 1

Answer:

$it \: is \: 21\% \\ \\ hope \: it \: helps \: you \: \\ \\ \\ \\ \\ \\ plzzzzzz \: mark \: me \: as \: a \: brainlist$

Answer 2

Answer:21% of oxygen in earth's atmosphere

HOPE IT HELPS