Ozone Loss Increases the Risk of

Q27: Sewage contains primarily<br>A)human feces.<br>B)heavy metals.<br>C)paper waste.<br>D)radioactive waste.

Q42: Levels of atmospheric greenhouse gases are rising

Q75: For every gallon of gas burned,about _

Q77: Trees can help reduce concentrations of greenhouse

Q78: Noise pollution can cause hearing loss and

Q80: Biomagnification occurs when larger animals eat smaller

Q82: Factors that may limit human population growth

Q84: Kelly is concerned about protecting her town's

Q91: Release of _ into the atmosphere is

Q96: A naturally occurring metal found in some