Question

1. thermal pollution is caused by excess ______.

options:
sewage
inorganic materials
radioactivity
heat

Explanation:

Thermal pollution is defined as the degradation of water or air quality by the introduction of excess heat, which disrupts natural temperature ecosystems. Sewage causes water pollution, inorganic materials contribute to solid/chemical pollution, and radioactivity causes radioactive pollution, so heat is the correct cause here.

Answer:

heat