The biocontrol species cactus moth (Cactoblastis cactorum) has not been able to eradicate the invasive prickly pear cactus from Australia because
A) cactus moths prefer to consume other cactus species rather than prickly pear.
B) prickly pear cactus is able to disperse to moth-free areas.
C) cactus moth populations are declining because of parasitic infection.
D) prickly pear cactus has evolved defences against the cactus moth.
Correct Answer:
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