TOEFL IBT Practice Questions - Test Of English As A Foreign Language Internet-based Test Exam

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Read the academic passage: In many coastal wetlands, plants slow moving water and trap sediment around their roots. Over time, this trapped material can raise the level of the marsh surface, helping it keep pace with moderate sea-level rise. However, when storms remove vegetation or when development blocks sediment flow, wetlands may lose this ability to rebuild themselves. Which statement best expresses the main idea?

Wetland plants can help marshes adapt to sea-level rise, but that process can be disrupted Coastal development always prevents storms from damaging wetlands Marsh plants survive only when sea levels remain completely unchanged Sediment flow is unrelated to the long-term health of coastal wetlands

Correct Answer:

Wetland plants can help marshes adapt to sea-level rise, but that process can be disrupted

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