The amount of people who die per 1,000 individuals.
What is death rate?
The leading cause of air pollution.
What are vehicle emissions?
A major source of water pollution.
What is mining, agriculture, fossil fuels, or garbage?
The top layer of soil.
What is topsoil?
The three main things to do to reduce pollution on Earth.
What are reduce, reuse, and recycle?
The amount of people born per 1,000 individuals.
A natural cause of air pollution.
What are wildfires/volcanic eruptions?
The floating "island" of garbage located in the Pacific Ocean.
What is the Great Pacific Garbage Patch?
The process of removing forests to use land for other reasons.
What is deforestation?
A source of indoor air pollution.
What is mold, pet hair, dust, or gases?
This happens to a population when the birth rate is greater than the death rate.
What is growth/increases?
Forms when precipitation mixes with pollutants in the air.
What is acid rain?
The percentage of freshwater on Earth that is accessible for drinking, farming, etc.
What is 1%?
The type of resource trees are considered to be.
What is renewable?
This happens to a population when the death rate is greater than the birth rate.
What is decreases?
This is happening to Earth's resources as the human population continues to grow.
What is resource depletion?
The primary source of smog in large cities.
What are vehicle emissions?
The process of raising fish to farm for food, which causes water pollution.
What is aquaculture?
The bottom layer of soil.
What is bedrock?
The type of pollution that can be traced to one specific, identifiable source.
What is point source?
The two main gases that pollute air indoors.
What are radon and carbon monoxide?
The two main ways to reduce water pollution.
What are improve farming methods and reduce pollutants?
When soil in an area becomes desert-like.
What is desertification?
These are necessary to decontaminate water so it is safe for humans to use.
What are water filtration systems?