Pollution occurs when there is too much of any substance. a harmful substance is detected. harmful substances build to unhealthy levels. too many people handle the substances.

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Carissa Parks

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3 February, 01:48

Pollution occurs when there is too much of any substance. a harmful substance is detected. harmful substances build to unhealthy levels. too many people handle the substances.

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Jaeden Adkins · Answer 1

The correct answer is C. Harmful substances build to unhealthy levels.

Samara Hickman · Answer 2

Pollution occurs when there is too much of any substance. As we are wasting more fossil fuels everyday, we are increasing the chance of risking another big pollution. These pollution is made up of harmful substances such as carbon dioxide, harmful chemical toxins, and others as well.