Question detail
Which of the following statements best describes the role of oceans in the carbon cycle?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
The composition and evolution of the Earth's atmosphere
Question
- A. Oceans release carbon dioxide into the atmosphere
- B. Oceans absorb carbon dioxide from the atmosphere
- C. Oceans produce carbon dioxide through photosynthesis
- D. Oceans have no effect on carbon dioxide levels
Answer
The correct option is Oceans absorb carbon dioxide from the atmosphere. This answer is correct because it matches the approved learning objective to explain that carbon dioxide dissolved in the oceans as the atmosphere changed in the subtopic How carbon dioxide decreased.
Explanation
The correct option is Oceans absorb carbon dioxide from the atmosphere. Oceans absorb carbon dioxide from the atmosphere is correct because it directly supports the approved learning objective to explain that carbon dioxide dissolved in the oceans as the atmosphere changed. This belongs to the subtopic How carbon dioxide decreased within The composition and evolution of the Earth's atmosphere, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from How carbon dioxide decreased.
Common mistake
Misunderstanding Carbon Dioxide Dissolution
Students often think that carbon dioxide simply disappears from the atmosphere without any process involved.
Emphasize that carbon dioxide dissolves in the oceans, which is a key process in the changing composition of the atmosphere.
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