Question

54. What is a fertiliser ? Name any two fertilisers. State two harmful effects caused by the excessive use of fertiliser​

Answer 1

Answer:

Two harmful effects of fertilisers are: Excessive use of fertilisers makes the soil less fertile. They also cause water pollution and soil pollution.

Explanation:

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Answer 2

Answer:

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Fertilisers are chemical substances which are rich in a particular nutrient. Some examples of fertilizers are urea, potash, NPK (nitrogen, phosphorus, potassium), etc.

Harmful effects caused by the excessive use of fertilizers are-

(i) Excessive use of fertilizers makes the soil less fertile.

(ii) Excessive use of fertilizers causes water pollution.