Indiscriminate use of fertilizers have led to:

Detailed Solution:

The correct answer is “All of the above”.

1) Excessive fertilizer application can lead to nutrient buildup, which can harm soil organisms and reduce soil fertility.

2) Fertilizers can leach into groundwater and surface water, causing eutrophication, which can harm aquatic ecosystems.

3) The release of ammonia from fertilizers can contribute to air pollution.