Which type of water pollution blocks sunlight and covers up the food sources, nesting sites and eggs of organisms?

The devices used in cars and trucks to reduce carbon monoxide emissions are called

What is the thick, brownish haze formed when certain gases react in sunlight?

Which indoor air pollutant is a colorless, odorless gas that forms when wood coal, oil or gas are incompletely burned?

Most scientists base their climate predictions on

Precipitation that is more acidic than normal because of air pollution is called

True or False: The layer of soil that is richest in decaying animal and plant matter is litter

True or False: Bacteria break down wastes during secondary treatment of wastewater.

True or False: Most hazardous wastes are disposed of in open dumps.

The trash that is produced in your home and school is called

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