Question

Explain how heat can be a source of water pollution.
in small paragraph

Answer 1

Heat becomes a form of water pollution—called thermal pollution—when industries, power plants or urban runoff discharge warmer water into rivers, lakes or coastal areas, raising the local temperature. Warmer water holds less dissolved oxygen and speeds up metabolism of aquatic organisms, stressing fish and invertebrates, altering reproduction and encouraging algal blooms and invasive species; sudden temperature changes can also cause mass fish kills. Thermal changes can disrupt food webs, reduce biodiversity and increase the toxicity or mobility of some chemical pollutants, so even though heat has no chemical residues, it still degrades water quality and ecosystem health.