What term describes a substance that, when introduced into the environment, has undesired effects or adversely affects the usefulness of a resource?

What term describes a substance that, when introduced into the environment, has undesired effects or adversely affects the usefulness of a resource?

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

Answer: (A)

The main idea is describing a substance released into the environment that causes harm or reduces the usefulness of a resource. That fits a pollutant. A pollutant is a substance that causes pollution and degrades environmental quality, leading to adverse effects on ecosystems or human use. A contaminant is any substance present where it isn’t wanted, but it doesn’t automatically imply pollution or harm; it can be present without causing damage. Waste refers to materials that are discarded and no longer useful, which isn’t about causing undesired effects in the environment. Nutrients provide nourishment and aren’t inherently about pollution or harm in this context.

The main idea is describing a substance released into the environment that causes harm or reduces the usefulness of a resource. That fits a pollutant. A pollutant is a substance that causes pollution and degrades environmental quality, leading to adverse effects on ecosystems or human use. A contaminant is any substance present where it isn’t wanted, but it doesn’t automatically imply pollution or harm; it can be present without causing damage. Waste refers to materials that are discarded and no longer useful, which isn’t about causing undesired effects in the environment. Nutrients provide nourishment and aren’t inherently about pollution or harm in this context.