Pollution is:

Pollution is:

• A. Describes any undesirable factor, or pollutant, added to air, water, or soil
• B. A beneficial natural resource
• C. A type of energy
• D. A chemical used for cleaning

Answer: (A)

Pollution is the introduction of undesirable factors, or pollutants, into air, water, or soil. These contaminants degrade environmental quality and can harm health and ecosystems. The idea that pollution is a beneficial natural resource, a type of energy, or a chemical used for cleaning doesn’t fit because those describe things that are useful or neutral, not harmful substances that degrade the environment. Pollution covers things like exhaust fumes, chemicals, oil spills, or excessive heat and noise—anything added to the environment in a way that reduces safety or quality. Understanding pollution this way helps explain why it matters: it’s about harmful contamination, not utilities or cleaners.

Pollution is the introduction of undesirable factors, or pollutants, into air, water, or soil. These contaminants degrade environmental quality and can harm health and ecosystems. The idea that pollution is a beneficial natural resource, a type of energy, or a chemical used for cleaning doesn’t fit because those describe things that are useful or neutral, not harmful substances that degrade the environment. Pollution covers things like exhaust fumes, chemicals, oil spills, or excessive heat and noise—anything added to the environment in a way that reduces safety or quality. Understanding pollution this way helps explain why it matters: it’s about harmful contamination, not utilities or cleaners.