chapter 16

Question 1

dirty or harmful substances in the environment

Answer 1

Pollution

Question 2

the oil, coal, and natural gas that are used to provide energy

Answer 2

Fossil Fuels

Question 3

rain that is more acidic than normal

Answer 3

Acid Rain

Question 4

gas made of three oxygen atoms

Answer 4

Ozone

Question 5

a yellow-brown haze that forms when sunlight reacts with air pollution

Answer 5

Smog

Question 6

water that collects under the earth’s surface

Answer 6

Groundwater

Question 7

human waste, garbage, detergents, and other household wastes washed down drains and toilets

Answer 7

Sewage

Question 8

huge, specially designed pits where waste materials are dumped and buried

Answer 8

Landfills

Question 9

easily broken down in the environmental

Answer 9

Biodegradable

Question 10

human-made liquid, solid, sludge, or radioactive wastes that may endanger human health or the environment

Answer 10

Hazardous Wastes

Question 11

an agency of the U.S. government that is dedicated to protecting the environment

Answer 11

Environmental Protection Agency

Question 12

a branch of the U.S. Department of Labor that protects American workers

Answer 12

Occupational Safety and Health Administration

Question 13

to change items in some way so that they can be used again

Answer 13

Recycle

Question 14

substances that cannot be replaced once they are used

Answer 14

Nonrenewable Resources

Question 15

he saving of resources

Answer 15

Conservation

Question 16

the 3 Rs: Reduce, Reuse, and Recycle

Answer 16

Helping to Reduce Solid Waste