Pesticides used to kill unwanted plants are: ответ на тест 1077810 - Английский язык

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Agronomists use the world “pests” in referring to weeds, plant diseases, and insects that threaten crops. Most farmers control pests with chemicals called pesticides. Scientists have developed hundreds of pesticides for use on farms. Each one is designed to fight certain of weeds, plant diseases, or harmful insects. All pesticides must be with extreme care. If they are used improperly, they may pollute the environment or the food supply and so endanger people’s health.
Farmers also use other methods of pest control in addition to pesticides. For example, turning the soil with a plough or mechanical cultivator kills most weeds. However, special pesticides called herbicides control weeds more thoroughly than soil turning does. Some herbicides remain active in the soil for some time and so kill weed seedlings as develop.
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Прочитайте текст.
Agronomists use the world “pests” in referring to weeds, plant diseases, and insects that threaten crops. Most farmers control pests with chemicals called pesticides. Scientists have developed hundreds of pesticides for use on farms. Each one is designed to fight certain of weeds, plant diseases, or harmful insects. All pesticides must be with extreme care. If they are used improperly, they may pollute the environment or the food supply and so endanger people’s health.
Farmers also use other methods of pest control in addition to pesticides. For example, turning the soil with a plough or mechanical cultivator kills most weeds. However, special pesticides called herbicides control weeds more thoroughly than soil turning does. Some herbicides remain active in the soil for some time and so kill weed seedlings as develop.
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