It minimizes the need for landfills, conserves resources, and reduces pollution.

They trap pollutants, excess nutrients, and sediments, improving water quality.

Their immune systems are often less developed (children) or weakened (elderly), making them more susceptible to the harmful effects of pollutants.

LD50 helps determine the toxicity of a substance by measuring the dose required to kill 50% of a test population. It aids in setting safe exposure limits.

Point source pollution comes from a single, identifiable source, while nonpoint source pollution comes from diffuse sources.

E-waste contains toxic materials that require special handling to prevent environmental and health hazards.

Bioaccumulation is the build-up of toxins within a single organism, while biomagnification is the increasing concentration of toxins as you move up the food chain. Understanding the difference helps to predict and mitigate the impact of pollutants on ecosystems.

Sewage treatment plants remove pollutants from wastewater to protect water quality and human health.

Dead zones are areas with very low oxygen levels, which cannot support marine life, leading to ecosystem collapse.

Pollution disproportionately affects vulnerable populations, and environmental justice seeks to ensure fair distribution of environmental benefits and burdens.

The accumulation of substances, such as pesticides, or other organic chemicals in an organism.

The concentration of toxins in an organism as a result of its ingesting other plants or animals in which the toxins are more widely disbursed.

A graph that shows the relationship between the size of a dose and the response it produces.

The lethal dose of a substance that kills 50% of a test population.

The effective dose of a substance that produces a specific effect in 50% of a test population.

Chemicals that interfere with the endocrine system, causing adverse developmental, reproductive, neurological, and immune effects.

Excessive richness of nutrients in a lake or other body of water, frequently due to runoff from the land, which causes a dense growth of plant life and death of animal life from lack of oxygen.

Microorganisms, such as bacteria, viruses, fungi, and protozoa, that can cause disease in humans.

Pollution that comes from a single, identifiable source.

Pollution that comes from diffuse sources.

Toxic chemicals that persist in the environment, bioaccumulate in organisms, and can travel long distances.

The discharge of heated water into a body of water, reducing oxygen levels and harming aquatic organisms.

It governs the "cradle-to-grave" disposal of hazardous materials.

Also known as "Superfund," it provides for the cleanup of abandoned toxic waste sites.

It makes it unlawful to discharge waste into waterways without a permit.

The EPA sets health standards for drinking water sources.

Carcinogens that cause reasonable harm cannot be added to food or drugs.