Question

select all that apply
select the phases that could correctly complete the sentence. earths atmosphere is made of
about 10 percent carbon dioxide
about 78 percent nitrogen
about 1 percent trace gases
about 21 percent oxygen

Explanation:

• Earth's atmosphere is composed of approximately 78% nitrogen, 21% oxygen, and 1% trace gases (such as argon, carbon dioxide, neon, etc.). The percentage of carbon dioxide is about 0.04% (not 10%).

Answer:

• B. about 78 percent nitrogen
• C. about 1 percent trace gases
• D. about 21 percent oxygen