earth sci. chap 4

Question 1

those that are always being replaced and will not run out

Answer 1

Renewable resources

Question 2

are those that can not be replaced quickly enough to keep from running out

Answer 2

Nonrenewable resources

Question 3

is the presence of substances that are harmful to the environment or to living things

Answer 3

pollution

Question 4

is any fuel that is formed from the remains of plants and animals that lived millions of years ago

Answer 4

fossil fuel

Question 5

is electricity produced by the energy in moving water

Answer 5

Hydroelectric power

Question 6

is plant material and animal waste used as fuel

Answer 6

Biomass