Which term refers to a substance released into the environment that has undesired effects and reduces the usefulness of a resource?

Which term refers to a substance released into the environment that has undesired effects and reduces the usefulness of a resource?

• A. Contaminant
• B. Pollutant
• C. Waste
• D. Effluent

Answer: (B)

A pollutant is a substance released into the environment that has undesired effects and reduces the usefulness of a resource. This term specifically highlights harm to air, water, soil, or ecosystems, and the resulting decline in quality or utility of those resources. A contaminant is any substance present where it shouldn’t be, but it doesn’t always imply harmful effects or reduced usefulness. Waste describes material discarded or no longer wanted, which isn’t necessarily about harming the environment after release. Effluent refers to wastewater discharged from a source, a narrow case of pollution, but not all pollutants are effluents and not every released substance is an effluent. So, the best match for something released with undesired effects that lowers a resource’s usefulness is a pollutant.

A pollutant is a substance released into the environment that has undesired effects and reduces the usefulness of a resource. This term specifically highlights harm to air, water, soil, or ecosystems, and the resulting decline in quality or utility of those resources.

A contaminant is any substance present where it shouldn’t be, but it doesn’t always imply harmful effects or reduced usefulness. Waste describes material discarded or no longer wanted, which isn’t necessarily about harming the environment after release. Effluent refers to wastewater discharged from a source, a narrow case of pollution, but not all pollutants are effluents and not every released substance is an effluent.

So, the best match for something released with undesired effects that lowers a resource’s usefulness is a pollutant.