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a city was intensively sprayed with a pesticide called ddt to control houseflies. the number of houseflies was immediately greatly reduced. each year thereafter, the city was sprayed again, but the flies gradually increased in numbers until 10 years later, when they were almost as abundant as they were when the control program began. which explanation applies to this situation?

Respuesta :

The DDT largely eliminated house flies. Only a few individuals who had this resistance naturally lived and passed it on to their descendants.

Are pesticides dangerous to people?

Acute impacts, often known as short-term negative health effects as well as typically limited, which can develop months or even years after exposure, are both possible with pesticides. Eyes that sting, blisters, rashes, blindness, nausea, lightheadedness, diarrhea, and even death are instances of acute health impacts.

What components make up pesticide?

They can be produced from organic materials like pyrethrin, a pesticide that is derived from specific chrysanthemum plants. Azadirachtin, a neem tree extract, is another illustration. Synthetic pesticides like pyrethroids, which control bugs similarly to pyrethrins, can also be produced.

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