EVERYDAY SCIENCE

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ENVIRONMENTAL SCIENCES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Many power plants use water from rivers in the process to generate electricity. Although much of this water is recycled, some is returned back to the river at a higher temperature., changing the habitat for organisms that live there. Which type of pollution is this?
A
Nutrient
B
Bacterial
C
Thermal
D
None of the above
Explanation: 

Detailed explanation-1: -A common cause of thermal pollution is the use of water as a coolant by power plants and industrial manufacturers. When water used as a coolant is returned to the natural environment at a higher temperature, the sudden change in temperature decreases oxygen supply and affects the ecosystem.

Detailed explanation-2: -Emissions directly released include sulfur dioxide, nitrogen dioxide, and carbon monoxide, as well as hazardous pollutants that can cause cancer and other health problems. Even biomass plants can produce very harmful emissions.

Detailed explanation-3: -Thermal pollution is caused by industrial activity, which introduces heat into the environment in an uncontrolled manner, for example: The use of water as a cooling system: the main causes of this pollution are industrial and manufacturing plants.

Detailed explanation-4: -Heated water from the industries can treated before discharging directly to the water bodies. Heated water from the industries can be treated by the installation of cooling ponds and cooling towers. Industrial treated water can be recycled for domestic use or industrial heating. More items •22-Feb-2018

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