Question

Thermal pollution in water bodies is caused due to the discharge of
A. Waster from agricultural fields
B. Hot water from power plants
C. Hot chemicals from industries
D. Waste from mines

Answer 1

Hint: The effects of thermal pollution are diverse in nature. In short, the damages include the loss of water ecosystems and reduces the diversity of animal populations in water bodies. All the organisms that live in water bodies, such as plant species, algae, bacteria, multi-celled animals, respond differently to the temperature changes which is a result of thermal pollution.

Complete answer: Thermal pollution can be defined as the deprivation of water quality by any process such as industrial waste, power plant waste, which changes the ambient temperature of the water.
1. This thermal pollution is also called thermal enrichment.
2. The most common cause of thermal pollution is the hot water that comes from power plants.
3. This hot water falls into the water of rivers or seas and changes the temperature of that particular portion of the water body which results in the damage of water bodies such as the death of many fishes, loss of biodiversity of water, etc.
4. To reduce this thermal pollution we can take some measures . We can use the water of thermal power plants by recycling the water that is coming out of the power plant. We can cool that by using deep and large refrigerators and reuse the water in the same power plant. This process will reduce thermal pollution as well as water pollution.
5. As a result, marine ecosystems and marine biodiversity will remain intact in the future.

So, the correct answer is option B. Hot water from power plants.

Note: Water is used as a cooling agent in the thermal power plants. Thermal pollution is sometimes called "thermal enrichment," also. It is the reduction of the quality of the water body that changes the ambient temperature of the water.