An invasive species does not need to be dangerous or aggressive to cause serious harm; it only needs to be good at what it does in a place that has no natural check on it. A plant that arrives without the insects, fungi, or grazing animals that limited it back home can spread far faster than in its original range, crowding out native species that evolved alongside those same checks and balances. Removal efforts that succeed tend to act early, before a population becomes so established that eradication is no longer realistic and the only remaining goal is managing its spread rather than reversing it.
The passage is organized primarily by
Pick an answer
Correct!
Not quite. The correct answer is highlighted.
Correct answer to question 108 (Paragraph Comprehension): explaining a general principle, then describing when removal efforts succeed
Method
The passage opens with the general principle that a species need not be aggressive to cause harm, then closes by describing when removal efforts succeed, matching the third choice; it names no rival theories and rejects nothing.
Updated: November 2026
Raise your AFQT scoreFree for iPhone and Android
