Concept:The Earth’s atmosphere is dominated by nitrogen and oxygen, while carbon dioxide exists only in trace amounts.
Explanation:From the table, planet X contains
CO2 at
4%,
N2 at
72%, and
O2 at
24% by volume.
On Earth, the dry atmosphere contains about
78% nitrogen and about
21% oxygen.
Carbon dioxide makes up only about
0.04% of Earth’s atmosphere.
This means that nitrogen and oxygen are the major gases in Earth’s atmosphere, while carbon dioxide is present in a very small amount.
Therefore, among the gases listed, the ones present in high percentages on Earth are oxygen and nitrogen.
Answer:D.
O2 and
N2