Question

what are the ill effects of modern methods 3 points answer​

Answer 1

Answer:

(i) Limits or destroys the natural habitat of most wild creatures, and leads to soil erosion.

(ii) Use of fertilizers can alter the biology of rivers and lakes.

3. Some environmentalists attribute the hypoxic zone in the Gulf of Mexico as being encouraged by nitrogen fertilization of the algae bloom.

Explanation:

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Answer 2

Explanation:

The impacts of modern agriculture on Environment are discussed below :-

• Soil Erosion —

The top fertile soil of the farmland is removed due to the excessive water supply. This leads to the loss of nutrient rich soil that hampered the productivity. It also causes the global warming because the silt of water bodies induces the release of soil carbon from the particulate organic material.

• Contamination of ground water —

The ground water is one of the important sources of water for irrigation. From agricultural fields nitrogenous fertilizers leach into the soil and finally contaminate groundwater. When the nitrate level of groundwater exceeds 25 mg/l, they can cause a serious health hazard known as “Blue Baby Syndrome”, which affects mostly infants even leading to their death.

• Water-logging and salinity —

The salinity of the soil is one of the reasons of low productivity just because of the improper management of farm drainage. In this situation, the roots of plants do not get enough air to respiration then it leads to low crop yield as well as low mechanical strength.

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