Land, Air, and Water Resources

The process of reclaiming products such as metal, glass, paper, and plastic and reusing them to create new products is called

•   mining.
•  incineration.
• composting.
•   recycling.

To create less waste in the first place is to

• reduce.
•  incinerate.
•  reuse.
•  recycle.

One group of gases that is responsible for destroying ozone in the ozone layer is

•   CFCs.
• car exhaust fumes.
• carbon monoxide and carbon dioxide.
•  nitrogen oxides and sulfur oxides.

Do ducks fly?

• yes
• no
• maybe

Most of the Earth's water (about 97 percent) is

• salt water in the oceans.
• freshwater in lakes and rivers.
• in the form of snow or ice.
• in the clouds.

A full landfill is covered to keep out rainwater.  This step is taken to

• prevent desertification.
• protect biodegradeable materials.
• help with recycling.
• prevent the formation of leachate.

Many types of hazardous waste can be disposed of

• in an open dump.
• in a carefully designed landfill.
• in a sanitary landfill.
• down the drain.

Most water pollution is the result of

• human activities.
• drought.
• volcanic eruptions.
• storms.

The ozone layer protects people from which of the following?

• carbon monoxide poisoning
• too much ultraviolet radiation
• the effects of radon
• surfing

You should not use a charcoal grill indoors, because

• charcoal contains radon.
• burning causes nutrient depletion.
• burning charcoal causes acid rain.
• burning produces carbon monoxide.