Apes Pollutants

The ozone layer protects us from

• UV rays
• CFCs
• Increased atmospheric heat
• Decreased atmospheric heat

Dust, ash and pollen are examples of this air pollutant

• Lead
• Ground-level ozone
• Particulate matter
• Nitrogen oxides

In a river ecosystem, dissolved oxygen concentrations drop quickly downstream from a point-source input of organic matter into the river due to

• increasing populations of mayfly and stonefly larvae
• increasing bacterial activity as organic matter decays
• decreasing bacterial activity as turbidity increases
• decreasing water temperature

Any compound containing carbon that participates in photochemical reactions in the atmosphere.

• Photochemical Oxidants
• Sulfur Trioxide
• Carbon Dioxide
• Volatile Organic Compound

A colorless, odorless gas that decreases the blood's ability to carry oxygen.  Can cause faintness, death.

• Nitrogen oxides
• Ground-level ozone
• Carbon monoxide
• Sulfur dioxide

Acid measures this on the pH scale.

• exactly 7
• anything below 7
• anything above 7
• anything from 1 to 14

Which of the following is a non-point source of water pollution

• Effluent from a sewage treatment plant
• BP refiner in Indiana discharging ammonia in a river.
• Runoff of pesticides from regional farms into the Illinois River.
• Hot water discharges from a nuclear power plant.

Which of the following is a persistent inorganic pollutant that can impair neurological functioning?

• Lead 
• DDT
• PCB's
• Atrazine

The biochemical oxygen demand (BOD) is defined as:

• the amount of oxygen required by humans who use a water supply
• the amount of oxygen required for biochemical decomposition processes
• the amount of oxygen needed by plants growing in a water source
• the amount of oxygen given off by a specific water source

Which of the following is not usually associated with eutrophication?

• algal blooms
• reduced photosynthesis in the water column
• increased heavy metal concentrations
• reduced dissolved oxygen