Question

Indiscriminate use of fertilizers causes
(a)Air pollution
(b)Water pollution
(c)Land pollution
(d)All of the above

Answer 1

Farmers have used fertilizers in their agricultural fields to increase their crop production. When it's raining chemicals in the fertilizers are flown into the water. Fertilizer contains nutrients such as nitrogen and phosphorus. Excess amount of nutrients leads to algal growth. These algae use oxygen in the water. So this is harmful to aquatic life.

Complete answer:
The utilization of chemical fertilizer has without a doubt expanded the capability of yields and supplement quality in the soil, the more utilization of fertilizer which contains nitrates, washed away from the soil by rainwater and straightforwardly enters water bodies. An excess of these minerals in water bodies causes depletion of oxygen resulting in the death of aquatic animals and contaminating the source of freshwater by acid release. The process of algal blossom, eutrophication, and increment in biological oxygen demand is related to the indiscriminate utilization of fertilizer.

Additional Information: The indiscriminate utilization of chemical fertilizers and pesticides could cause adverse changes in biological balance as well as lead to an increase in the incidence of cancer and other diseases, through the toxic residues present in the grains and other edible parts of plants.
Many types of fertilizers and pesticides are made up of liquid or powdered chemicals which can be designed to spread efficiency over the entire area of the targeted crop. Although, this ability also makes crop treatments easy for dispersing with a simple just of wind or falling rain.
So, the correct answer is ‘Water pollution’.

Note: The correct use of fertilizers eases the problem of erosion control on erosion-sensitive land because a strongly-growing well-manure crop, properly managed, gives much better protection to the surface soil than a half-starved crop. The soil was can be a very serious source of pollution of rivers and lakes, not merely because of the silting up of waterways it causes, but because the soil particles most easily washed off the surface are the fine clay and clay-humus particles which are rich in plant nutrients, since they absorb all those fertilizer components that soils can hold in a relatively insoluble form.