Question

question 8 points 1 what is the percentage of oxygen present in the atmosphere? 78% 0.03% 21% 1%

Explanation:

The Earth's atmosphere is composed of various gases. Nitrogen makes up about 78%, oxygen about 21%, argon about 1%, and carbon dioxide about 0.03% along with other trace gases. So the percentage of oxygen in the atmosphere is 21%.

Answer:

C. 21% (assuming the options are labeled as A. 78%, B. 0.03%, C. 21%, D. 1%)