Question

The term “water pollution” can be defined in several ways. Which of the following statements does not give the correct definition?

• A. The addition of undesirable substances to water bodies
• B. The removal of desirable substances from water bodies
• C. A change in pressure of the water bodies
• D. A change in temperature of the water bodies.

Answer 1

The correct option is C

A change in pressure of the water bodies

The correct option is C.

Explanation of the correct options:

Water pollution :

1. The undesirable change in the physical, chemical and biological properties of water is due to the addition of pollutants that cause harm to the environment and living organisms.
2. The removal of desirable substances from water bodies can harm the ecosystem and result in water pollution.
3. Any change in the temperature of water bodies can result in water pollution.
4. Changes in the atmospheric pressure of water bodies do not cause water pollution.

Explanation of the incorrect options:

Option A:

The addition of undesirable substances to water makes it polluted.

Option B:

1. The removal of desirable substances from the water bodies causes water pollution.
2. For example, The addition of domestic sewage waste into the water bodies.

Option D:

1. The change in the temperature of water bodies changes the physical condition of water and leads to water pollution.
2. A sudden temperature change may have a dangerous effect on aquatic animals.

Final answer: The term “water pollution” can be defined in several ways. A change in pressure of the water bodies does not give the correct definition.