Question

How fertiliser can pollute environment?

• A. Fertilisers are not biodegradable so retained in the atmosphere
• B. Fertilisers biomagnify
• C. Fertilisers have very harmful effect on organisms
• D. All of the above

Answer 1

The correct option is D All of the above

Fertilizers are the chemical substances that can cause serious problems if they contaminate freshwater and marine ecosystems. The same nutrients in fertilizers that nourish crops, lawns and golf courses can cause rapid growth of algae, also known as an algal bloom and even can involve in food chain. Dying algae, in turn, feed bacteria, which consume so much dissolved oxygen that fish and plants cannot survive. Some species of algae also produce toxins that can be harmful to humans.

Thus, the correct answer is option D.