select the correct answer. which gas forms 21% of earths atmosphere? a. argon b. carbon dioxide c. nitrogen…

select the correct answer. which gas forms 21% of earths atmosphere? a. argon b. carbon dioxide c. nitrogen d. oxygen

select the correct answer. which gas forms 21% of earths atmosphere? a. argon b. carbon dioxide c. nitrogen d. oxygen

Answer

Answer:

D. oxygen

Brief Explanation:

Oxygen makes up about 21% of Earth's atmosphere. Other gases have different percentages. Argon is about 0.93%, carbon - dioxide about 0.04%, and nitrogen about 78%.