Deciding to use a natural enemies approach to control the mites that infect her crops, a farmer purchases
Deciding to use a natural enemies approach to control the mites that infect her crops, a farmer purchases 10,000 ladybugs in the spring and spreads them over her 100-acre fields. This represents the use of natural:
(a) predators (b) parasitoids (c) pathogens (d) plant-eaters
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