long note on prevention of soil pollution
Answers
Explanation:
Promoting healthy agricultural practices such as the use of organic manure and organic farming methods can help reduce the amount of chemical fertilizers used on agricultural soils. Efficient and limited use of chemical pesticides must also be advocated.
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Answer:
What is Soil Pollution?
Soil pollution refers to the contamination of soil with anomalous concentrations of toxic substances. It is a serious environmental concern since it harbours many health hazards. For example, exposure to soil containing high concentrations of benzene increases the risk of contracting leukaemia.
It is important to understand that all soils contain compounds that are harmful/toxic to human beings and other living organisms. However, the concentration of such substances in unpolluted soil is low enough that they do not pose any threat to the surrounding ecosystem. When the concentration of one or more such toxic substances is high enough to cause damage to living organisms, the soil is said to be contaminated.
The root cause of soil pollution is often one of the following:
Agriculture (excessive/improper use of pesticides)
Excessive industrial activity
Poor management or inefficient disposal of waste
The challenges faced in soil remediation (decontamination of soil) are closely related to the extent of soil pollution. The greater the contamination, the greater the requirement of resources for remediation.
What are the Pollutants that Contaminate Soil?
Some of the most hazardous soil pollutants are xenobiotics – substances that are not naturally found in nature and are synthesized by human beings. The term ‘xenobiotic’ has Greek roots – ‘Xenos’ (foreigner), and ‘Bios’ (life). Several xenobiotics are known to be carcinogens.