Question detail
What role do marine organisms play in the formation of sedimentary rocks from carbonates?
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. They dissolve carbonates in water.
- B. They use carbonates to make shells and skeletons.
- C. They break down sedimentary rocks.
- D. They transport sediments to land.
Answer
The correct option is They use carbonates to make shells and skeletons.. This answer is correct because it matches the approved learning objective to describe how carbonate precipitates formed sediments that became sedimentary rocks in the subtopic How carbon dioxide decreased.
Explanation
The correct option is They use carbonates to make shells and skeletons.. They use carbonates to make shells and skeletons. is correct because it directly supports the approved learning objective to describe how carbonate precipitates formed sediments that became sedimentary rocks. 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 Sedimentary Rock Formation
Students often confuse the process of carbonate precipitation with the formation of sedimentary rocks, thinking they are the same process.
Clarify that carbonate precipitates form from dissolved carbon dioxide in water, which then accumulates and compacts over time to create sedimentary rocks.
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