Assertion (A): Pollution is always caused by | vedclass

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(D) Pollution is defined as an undesirable change in the physical,chemical,or biological characteristics of air,water,and land that causes harmful eff

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If both the Assertion and Reason are incorrect.

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(D) Pollution is defined as an undesirable change in the physical,chemical,or biological characteristics of air,water,and land that causes harmful effects on living organisms.Pollution can be natural or anthropogenic (man-made). Natural sources of pollution include volcanic eruptions,forest fires,and soil erosion.Therefore,the Assertion $(A)$ is incorrect because pollution is not always caused by human activities.Contamination refers to the presence of harmful substances or organisms in an environment,whereas pollution implies that these substances cause adverse effects on the ecosystem.Thus,pollution is distinct from contamination,making the Reason $(R)$ incorrect.Since both the Assertion and the Reason are incorrect,the correct option is $(D)$.

Assertion $(A)$: Pollution is always caused by human activities.
Reason $(R)$: Pollution is not different from contamination.

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Assertion $(A)$: Pollution is always caused by human activities.Reason $(R)$: Pollution is not different from contamination.