___________ is any waste that is a risk to the health of humans or other living things.

• hazardous waste

• politics

• sewage

• water runoff

A dark brown, crumbly material made from decomposed matter is called _____________.

• compost

• brown sugar

• saw dust

• non-biodegradable

A ____________ is a waste disposal facility where wastes are put in the ground and covered each day with a layer of dirt, plastic, or both.

• landfill

• incinerator

• compost heap

• aquifer

Solid waste includes all of the following except;

• newspaper and soda bottles

• food scraps and yard clippings

• ozone and carbon dioxide

• junk mail and milk cartons

If your shirt is partly cotton and partly polyester, what part is biodegradable?

• cotton

• polyester

• both a and b

• none of the above

Microorganisms are unable to break down plastics because plastics

• are made from oil

• are too abundant

• are made of unknown elements

• do not occur in nature

Municipal solid waste is approximately what percentage of all solid waste?

• 2%

• 20%

• 60%

• 90%

Leachate is a substance that

• is produced in a compost pile

• is a byproduct of bacterial digestion

• is produced by incinerators

• contains dissolved toxic chemicals

Which of the following is NOT a benefit of incinerating waste?

• It reduces the material sent to landfills

• It produces energy in the form of heat

• It can be used to produce electricity

• It neutralizes all of the toxic materials

Manufacturers could reduce waste and conserve resources by making products that

• use more materials

• are more durable

• are difficult

• are disposable