A factory discharges warm water from its cooling system into a nearby river. What is the PRIMARY environmental impact of this thermal pollution?

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Question

A factory discharges warm water from its cooling system into a nearby river. What is the PRIMARY environmental impact of this thermal pollution?

Accepted Answer

The warm water reduces dissolved oxygen levels in the river — Warmer water holds less dissolved oxygen. When a factory discharges heated water into a river, oxygen levels drop, stressing or killing aquatic organisms that require adequate oxygen, such as fish. Thermal discharge does not significantly alter pH or salinity, and warm water reduces, not increases, the likelihood of freezing.

Answer

The warm water increases the pH of the river

Answer

The warm water reduces dissolved oxygen levels in the river

Answer

The warm water causes the river to freeze more quickly in winter

Answer

The warm water increases the salinity of the river

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