Question

[we know that earth's atmosphere is 21% of Oxygen and 78% of nitrogen]
[and this also we know that in venus and Mars and etc etc planet also having 21 percent of Oxygen [in other planet there is oxygen in atmosphere but it can harm] then how come other planets atmosphere is different from earth's atmosphere ​

Answer 1

Answer:

Explanation:

[we know that earth's atmosphere is 21% of Oxygen and 78% of nitrogen]

[and this also we know that in venus and Mars and etc etc planet also having 21 percent of Oxygen [in other planet there is oxygen in atmosphere but it can harm] then how come other planets atmosphere is different from earth's atmosphere ​