Thermal pollution is a temperature change in natural water bodies caused by human influence. The temperature change can be upwards or downwards. In the Northern Hemisphere, a common cause of thermal...
When fuels are used to produce electricity, to heat a building, or to drive vehicles, there is always low quality heat energy rejected in the process. Think about the heat coming out of your car...
In a large city it can cause unpleasant overheating and smog conditions. In lakes and rivers it can affect the ecology-fish species may be adversely affected and algae blooms caused.