Question

suggest any two methods of controlling pest which are based on biological principles​

Answer 1

Answer:

pesticide and removal of weeds or weedisides

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Answer 2

Two methods for past control are -

Using biopesticide -

The method includes biological organisms to control pests. It may also include compounds released from organisms to inhibit pests.

Genetic engineering -

Changing the genome of various microbes or plants to self inhibit pests is advanced technology.

This also includes pests' genetic modification and releasing them. This affects other pests genes' too.

Thus negatively affecting their population.