Earth Science / Human Impacts Review

Which of the following is NOT a fossil fuel?

The process of saving/protecting a natural resource is called:

The number and variety of living things found on Earth or within an ecosystem is called

A substance that makes air, water, or land unfit for life is called:

Where do most earthquakes occur?

An example of a nonrenewable natural resource is:

The more people in a smaller area, the ________ the population density.

A form of energy derived from a natural, renewable resource is called:

What is NOT a problem that developed after people made a plan to share the Colorado River water

What part of all the water on Earth is freshwater?