TOEFL IBT Reading Practice Questions - TOEFL IBT Reading Section Exam

Access More Questions

Passage: In coastal wetlands, grasses and reeds slow incoming water, causing suspended sediment to settle around plant roots. This gradual buildup can raise the marsh surface and help it keep pace with moderate sea-level rise. When storms remove vegetation or when seawalls block sediment from reaching the marsh, however, the system loses part of its natural repair mechanism. Which choice best states the passage's central idea?

Wetland plants and sediment can help marshes rebuild, but storms and barriers can disrupt that process. Sea-level rise is caused mainly by reeds and other wetland plants trapping too much sediment. Coastal wetlands survive only when storms remove old vegetation from the marsh surface. Seawalls improve marsh health by increasing the amount of sediment that reaches plant roots.

Correct Answer:

Wetland plants and sediment can help marshes rebuild, but storms and barriers can disrupt that process.

Access more questions from this quiz

Continue to TOEFL iBT Reading Practice Questions - TOEFL iBT Reading Section Exam for more practice questions and the full quiz experience.

Access More Questions