Question

Thermal pollution means
A. Increase in the temperature of water
B. Oxygen depletion
C. Death of aquatic animals
D. All of the above

Answer 1

Hint:Thermal pollution means increasing or decreasing the temperature of water. It can cause death of marine life.

Complete answer:
Thermal pollution can be defined as the sudden increment or reduction of temperature of any water body.
The water body can be a lake, a river, a pond or even can be an ocean.
This mainly happens due to human activity in thermal plants or factories that are present beside the water bodies.
The hot water from the plants is released in the water bodies as a result the temperature of the water bodies increases suddenly, which further leads to the distortion of aquatic biodiversity.
The main causes of thermal pollutions are – water is used as a cooling agent in power plants and manufacturing industries, soil erosion, deforestation – as forests help to cool down the temperature of the earth, natural causes like volcanoes, geothermal vents, hot springs; and disposal of domestic sewages on water bodies that can trap heat.
From the given question we will choose option A. Increase in the temperature of water as the answer because death of aquatic animals is the result of thermal pollution but the question asks for the meaning.
Oxygen depletion cannot be the answer as there is no relation between oxygen depletion and thermal pollution.

So, the correct answer is option A. Increase in the temperature of water.

Note: To maintain the aquatic diversity and environmental health we need to control thermal pollution. Ozone depletion and increase in global temperature are related to each other.