Human Impact

Front

What are nonpoint-source water pollutants?

Back

Nonpoint-source water pollutants are contaminants that do not originate from a single, identifiable source. They often result from runoff from urban and agricultural areas.

Front

What absorbs ultraviolet rays in the atmosphere?

Back

The ozone layer absorbs ultraviolet rays in the atmosphere, protecting living organisms from harmful effects.

Front

What do nuclear power plants run on?

Back

Nuclear power plants primarily run on uranium, which undergoes fission to produce energy.

Front

What is one way to save energy at home?

Back

Always turn off the lights when you leave your house.

Front

What causes eutrophication in water bodies?

Back

Eutrophication is caused by excess fertilizers running off agricultural land into waterways, leading to nutrient overload.

Front

Define point-source pollution.

Back

Point-source pollution refers to contaminants that enter the environment from a single, identifiable source, such as a pipe or a drain.

Front

What is the greenhouse effect?

Back

The greenhouse effect is the warming of Earth's surface due to the trapping of heat by greenhouse gases in the atmosphere.

Front

What are greenhouse gases?

Back

Greenhouse gases are gases that trap heat in the atmosphere, including carbon dioxide, methane, and nitrous oxide.

Front

What is urban runoff?

Back

Urban runoff is water that flows over urban areas, often carrying pollutants into nearby water bodies.

Front

What is the role of the stratosphere?

Back

The stratosphere is the second layer of Earth's atmosphere, located above the troposphere, and contains the ozone layer.