Question

Cause of Water pollution is

• A. Fertilizers
• B. Manure
• C. Seeds
• D. Plants

Answer 1

The correct option is A

Fertilizers

Water pollution:

• Water pollution is the contamination of water bodies due to such as lakes, oceans, rivers, and groundwater due to the unwanted substances that have harmful effects on both living and non-living organisms.
• The unwanted substances which cause water pollution directly or indirectly are known as pollutants.

The explanation for the correct answer

Option A

• In modern agriculture, we use large amounts of pesticides, insecticides, and fertilizers more than actually required by the plants.
• The excessive use of these chemicals finds its way to water bodies which results in water pollution.
• Fertilizers usually contain nitrogen salts which are highly soluble in water. These salts are leached away by rainwater and reach the water bodies. They make the water in water bodies acidic. In this way, fertilizers cause water pollution.

The explanation for the incorrect answer

Option B

• Manure is the decomposed form of dead plants and animals.
• It is the natural form of fertilizer.
• Manure contributes to an improved soil structure that results in better water circulation and greater water holding capacity.

Option C

• Seeds are the beginning of a new plant.
• However, they do not start to grow until they receive the things to grow such as soil, water, and sunlight.

Option D

• Plants are living organisms that are part of the kingdom Plantae.
• Plants need five things to grow: sunlight, water, air, and nutrients.

Thus option A i.e., fertilizers are the correct answer.