Question

Sometimes algal blooms can be observed in the oceans. Find out the reason behind the occurrence of algal blooms. (a) Mixing of oil with ocean water (b) Dumping of plastic objects in the oceans (c) Increase in acidity of ocean water (d) Mixing of nutrients present in chemical fertilisers with ocean water
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Answer 1

Answer:

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Explanation:

Some algal blooms are the result of an excess of nutrients (particularly phosphorus and nitrogen) into waters and higher concentrations of these nutrients in water cause increased growth of algae and green plants. ... With more food available, the bacteria increase in number and use up the dissolved oxygen in the water.