Question

The major source of phosphate and nitrogen nitrate pollution in water bodies is through
1) detergent and fertizers or sweg
2) vegetable matter
3) acid rain
4) faecal matter

Answer 1

1)Phosphates in detergents can lead to freshwater algal blooms that releases toxins and deplete oxygen in waterways.

Fertilizers-Irrigation water containing fertilizers is a common culprit as are septic systems, wastewater treatment plants, dairies and natural conditions.

---Hope it helpz...

Answer 2

Answer:

The major source of phosphate and nitrogen nitrate pollution in water bodies is detergent and fertilizers or sewage.

Explanation:

Nitrogen and phosphorus are the macroelements essential for plant growth. Increasing the nutrients like nitrogen and phosphorus in water bodies is called eutrophication. This occurs due to runoff sewages, and excess fertilizers carried by heavy rainfall through the ground to the water bodies.

The algae inhabiting the water bodies are the organisms that respond first to this change. Excessive algal growth causes depletion in the amount of dissolved oxygen in the water. As a result, the other living organisms of the aquatic ecosystem are adversely affected.

Hence, eutrophication primarily occurs due to anthropogenic activities like excessive use of fertilizers on land, mixing sewages, and washing or bathing near the sources of water.