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📖 Reading Passage
❓ Question According to the passage, which of the following statements about keystone species is TRUE?
A.
A) Keystone species are always top predators in an ecosystem.
B.
B) The effect of a keystone species is consistent across all habitats.
C.
C) Keystone species can be identified based solely on their population size.
D.
D) The concept of keystone species, while useful, has limitations due to context-dependence.
✅ Correct Answer
D) The concept of keystone species, while useful, has limitations due to context-dependence.
TOEFL Reading Tips
Skim the questions first, underline keywords, then locate in the passage
Watch for paraphrasing; correct answers are often reworded
Infer vocabulary meaning from context, not just memory
Base inferences on the passage; avoid over-extrapolation
Manage time: about 18 minutes per passage
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