Question

what is the most common source of thermal water pollution? cafos power plants

Explanation:

Thermal water pollution occurs when human activities cause a significant change in water temperature. Power plants are major contributors. They use water for cooling. After use, the heated water is discharged back. This raises the temperature of water bodies. CAFOs (Concentrated Animal Feeding Operations) mainly cause other types of pollution (like nutrient - rich waste pollution), not thermal.

Answer:

Power plants