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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: NCERT Class 12 Biology, Chapter 13, Organisms and Populations._
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