Which of the following would NOT be considered a chemical pollutant?

Plastic waste is not classified as a chemical pollutant because it does not dissolve in water to release harmful substances or chemicals into aquatic environments. Instead, plastic waste physically pollutes waterways and oceans, posing risks to aquatic life through entanglement and ingestion, but it does not directly alter the chemical composition of water in the same way that chemical pollutants do.

In contrast, pesticides, heavy metals, and nutrients from fertilizers all fall under the category of chemical pollutants. These substances can leach into water bodies, leading to contamination and harmful effects on aquatic ecosystems. Pesticides can be toxic to various organisms and affect biodiversity. Heavy metals like mercury or lead can accumulate in organisms, causing long-term ecological harm. Nutrients from fertilizers can lead to eutrophication, resulting in oxygen depletion and harming aquatic life.