Indiscriminate use of fertilisers causes

Indiscriminate use of pesticides is a cause for 1) Killing of harmful insects 2) Killing of useful insects 3) Increase of crop yield 4) Reduce of crop yield

Assertion : Excess use of fertilisers causes salt loading of soil. Reason : Fertilisers may develop alkalinity in soil.

Indiscriminate use of chemicals can bring about the destruction of-

Indiscriminate usage of plastic is a serious threat to bio-diversity.

Indiscriminate use of DDT is undesirable because:

Indiscriminate use of X-rays for diagnoses should be avoided. Give reasons.

Ammonium compounds are used as fertilisers because of the vital element ……………………… .

Mention the risk of indiscriminate use of antibiotics.