km
a)
ii) Which gas is essential for the existence of life on the Earth?
a) Nitrogen
b) Oxygen
c) Helium
Answers
Answered by
4
b) Oxygen gas
Byeeeeeeeeeeeee
Answered by
2
PLEASE MARK IT AS A BRAINLIEST AND FOLLOW ME
Answer:
b ) Oxygen
Oxygen is present about 21% in the earth .
It is also used by plants to make his food .
It is used by humans for survival as we know we breath oxygen .
Similar questions