Question

defination. of. pollution​

Answer 1

Explanation:

the presence in or introduction into the environment of a substance which has harmful or poisonous effects.

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Answer 2

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➡️Pollution is the introduction of contaminants into the natural environment that cause adverse change

➡️. Pollution can take the form of chemical substances or energy, such as noise, heat, or light. Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants. Pollution is often classed as point source or nonpoint source pollution. In 2015, pollution killed 9 million people worldwide.