Question

sometimes algal bloom's can be observed in the oceans .find out the reason behind the occurrenice of algal blooms. (a) mixing of oil with ocean water (b) dumping of plastic objects in the ocean (c) increase in acidity of ocean water (d) mixing of nutrients present in chemical fertilisers with ocean water (​

Answer 1

Answer:

what

Explanation:

Answer 2

The reason behind the occurrence of algal blooms in the oceans is- d) mixing of nutrients present in chemical fertilisers with ocean water.

• Most common reason behind the formation of algal bloom is the presence of huge amount of nutrients in the oceans. Nutrients favour the growth of algae. Nitrogen and phosphorus are the main chemicals that contribute to the growth of algae and Cyanobacteria.
• The chemical fertilizers are rich in nutrients like phosphorus and nitrogen. The mixing of these fertilizers with agricultural runoff result in algal blooms.