3
QuizMultiple Choice

Environmental Changes — Quiz

Question 3 • TPS EdX Biology

Which statement describes an effect of large asteroid and comet impacts?

Answer
A
They may cause changes limited to within the crater.
B
They may cause small craters on Earth’s surface.
C
They may cause continents to move.
D
They may kick up dust and pollute Earth’s atmosphere.

Explanation

A large asteroid or comet impact can throw enormous amounts of dust and debris into the atmosphere. This can block sunlight and affect conditions far beyond the impact site, so “They may kick up dust and pollute Earth’s atmosphere” is correct; the effects are not limited to the crater.

AI-written and checked against the verified answer.

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