Which best describes the advantage of pest resistance?

c) Farmers do not have to use harsh chemicals to save their crops.

Explanation:

Options:

a) Pests are mutated and tolerate more.

b) Pesticides become less effective.

c) Farmers do not have to use harsh chemicals to save their crops.

d) Farmers can kills weeds without killing their cash crop.

Pest resistance refers to a situation in which pests, e.g. weeds, insects, etc., become resistant by pesticides. This means that these chemicals are no longer effective on these organisms.

Although this could be seen as a negative effect, it could actually have advantages. Experts in biological control strategies aim to minimize the use of toxic pesticides and change to sustainable systems of pest management. Therefore, if a pest becomes resistant, farmers do not have to use harsh or toxic chemicals to save their crops and may opt, instead, for biological control methods, such as the use of nematodes to control pests.

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