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Prickly pear cactus overran Australia until a cactus-feeding ___ was introduced.

AFish
BMoth
CGoat
DBird
Answer & Solution
Correct answer: B. Moth
1. The cactus had no natural predator in Australia. 2. Its predator was brought from its home habitat. 3. That predator was a moth. _Source: syllabus Biology, Chapter 13, Organisms and Populations._
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