1.

What is meant by environmental pollution?

A. A solid substance that exists in such concentrations as may be or is likely to be harmful to the environment.
B. A liquid that exists in such concentration as may be or is likely to be harmful to the environment.
C. A gaseous substance that exists in such concentrations as may be or is likely to be harmful to the environment.
D. All of the above are environmental pollutants.
Answer» E.


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