Water logging and soil salinity are some of the problems that have come in the wake of the Green Revolution. Discuss their causes and adverse effects to the environment.
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The Salts occur naturally within soils and water. Salination can be caused by natural processes such as mineral weathering or by the gradual withdrawal of an ocean.It can also come about through artificial processes such as irrigation with salt water.
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The air in the soil pore is replaced by the water leading to deficiency, reducing plant growth. Transport of gases is affected. Limited exchange of gases results in accumulation of CO2 and thus affecting water absorption and transpiration In absence of oxygen, microbes produce toxins such as methane that affect plant growth. Concentration of phosphorus, iron, manganese, silicon increases and hat of zinc decreases. High iron concentration is toxic to many plants.
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Answer:
Human population size has grown enormously over the last hundred years. This means increase in demand for food, water, home, electricity, roads, automobiles and numerous other commodities. These demands are exerting tremendous pressure on our natural resources, and are also contributing to pollution of air, water and soil. The need of the hour is to check the degradation and depletion of our precious natural resources and pollution without halting the process of development.
Pollution is any undesirable change in physical, chemical or biological characteristics of air, land, water or soil. Agents that bring about such an undesirable change are called as pollutants. In order to control environmental pollution, the Government of India has passed the Environment (Protection) Act, 1986 to protect and improve the quality of our environment (air, water and soil).
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