Pollution is any undesirable change in

Consider the following statements about pollution I.Pollution is an undesirable change in physical ,chemical or biological characteristics of air ,land ,water or soil II.the air act was amended in 1987 to include noise as air pollutant III.In order to control environmental pollution the government of India has passed the environment protection Act ,1976 to protect and improve the quality of our environment Which of the statements given above are correct?

Environmental pollution is undesirable change in the physical, chemical or biological characteristics of air, water or soil. It is caused by production and accumulation of wastes which may be industrial or domestic or agricultural or commercial. So the safe disposal of these wastes is essential to prevent environmental pollution. Answer the following questions related to managment of wastes: Differentiate between incineration and pyrolysis.

Give the biological/technical term for the following: The process causing an undesirable change in the environment.

Agents that bring about an undesirable change in our enironment are called as

Find whether the following sentences are true or false.If false correct the statement. Forest fire is an undesirable change.

What is an undesirable change? Give example.

It is an undesirable change that occurs in air and water.

It is an undesirable change that occurs in air and water.