Ch 25

Question 1

Natural resource

Answer 1

Resources provided by Earth

Question 2

Renewable resource

Answer 2

Natural resources that can be used indefinitely without causing a reduction in the supply

Question 3

Sustainable yield

Answer 3

If the replacement of renewable resources is at the same rate at which it is consumed, this happens

Question 4

Nonrenewable resource

Answer 4

A resource that is in a fixed amount

Question 5

Desertification

Answer 5

Loss of topsoil in semiarid or arid areas can lead to this, where productive land becomes desert

Question 6

Bedrock

Answer 6

Deeper soil layer consisting of inorganic matter, such as broken down rock, sand, silt, clay, and gravel

Question 7

Aggregate

Answer 7

A mixture of gravel, sand, and crushed stone that naturally accumulates on or close to Earth’s surface. Used for the base of highway surfaces

Question 8

Ore

Answer 8

Natural resource that can be mined at a profit

Question 9

Gangue

Answer 9

Material left after ore is extracted. May release harmful chemicals into groundwater or surface water

Question 10

Pollutant

Answer 10

Substance that can adversely affect the survival, health, or activities of life slash organisms

Question 11

Air pollution

Answer 11

When pollutants in air reach a level that is harmful to human health, this results

Question 12

Desalination

Answer 12

Process where salt is removed from ocean water, making freshwater