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Multiple Choice
Venus' atmosphere is primarily composed of which gas?
A
Nitrogen (N_2)
B
Carbon dioxide (CO_2)
C
Oxygen (O_2)
D
Methane (CH_4)
Verified step by step guidance
1
Understand that the question is about the primary composition of Venus' atmosphere, which is a factual knowledge question in planetary chemistry.
Recall that Venus' atmosphere is known for its thick clouds and greenhouse gas effects, which are mainly due to a specific gas.
Identify the main gases listed: Nitrogen (N_2), Carbon dioxide (CO_2), Oxygen (O_2), and Methane (CH_4).
Use knowledge of planetary atmospheres to recognize that Venus' atmosphere is dominated by Carbon dioxide (CO_2), which makes up about 96% of its atmosphere.
Conclude that the primary gas in Venus' atmosphere is Carbon dioxide (CO_2).