Population Growth
Air Pollution
Water Pollution
Impacts on Land
Miscellaneous
100

The amount of people who die per 1,000 individuals.

What is death rate?

100

The leading cause of air pollution.

What are vehicle emissions?

100

A major source of water pollution.

What is mining, agriculture, fossil fuels, or garbage?

100

The top layer of soil.

What is topsoil?

100

The three main things to do to reduce pollution on Earth.

What are reduce, reuse, and recycle?

200

The amount of people born per 1,000 individuals.

What is birth rate?
200

A natural cause of air pollution.

What are wildfires/volcanic eruptions?

200

The floating "island" of garbage located in the Pacific Ocean.

What is the Great Pacific Garbage Patch?

200

The process of removing forests to use land for other reasons.

What is deforestation?

200

A source of indoor air pollution.

What is mold, pet hair, dust, or gases?

300

This happens to a population when the birth rate is greater than the death rate.

What is growth/increases?

300

Forms when precipitation mixes with pollutants in the air.

What is acid rain?

300

The percentage of freshwater on Earth that is accessible for drinking, farming, etc.

What is 1%?

300

The type of resource trees are considered to be.

What is renewable?

300

This happens to a population when the death rate is greater than the birth rate.

What is decreases?

400

This is happening to Earth's resources as the human population continues to grow.

What is resource depletion?

400

The primary source of smog in large cities.

What are vehicle emissions?

400

The process of raising fish to farm for food, which causes water pollution.

What is aquaculture?

400

The bottom layer of soil.

What is bedrock?

400

The type of pollution that can be traced to one specific, identifiable source.

What is point source?

500

The two main gases that pollute air indoors.

What are radon and carbon monoxide?

500

The two main ways to reduce water pollution.

What are improve farming methods and reduce pollutants?

500

When soil in an area becomes desert-like.

What is desertification?

500

These are necessary to decontaminate water so it is safe for humans to use.

What are water filtration systems?