Question detail
Which of the following gases is considered a trace gas in the current atmosphere?
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. Oxygen
- B. Nitrogen
- C. Carbon dioxide
- D. Argon
Answer
The correct option is Argon. This answer is correct because it matches the approved learning objective to explain why there are several theories about the Earth's early atmosphere in the subtopic The Earth's early atmosphere.
Explanation
The correct option is Argon. Argon is correct because it directly supports the approved learning objective to explain why there are several theories about the Earth's early atmosphere. This belongs to the subtopic The Earth's early atmosphere 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 The Earth's early atmosphere.
Common mistake
Misunderstanding Theories
Students often think there is only one theory about the Earth's early atmosphere instead of recognizing that multiple theories exist due to limited evidence.
To fix this, students should study the different theories and understand that scientific explanations can vary based on available evidence and interpretations.
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