• 1. 
    Which of the following elements is not a heavy metal?

  • Lead
  • Lithium
  • Arsenic
  • Mercury
  • 2. 
    Which book is best known for raising awareness that the overuse of DDT and other chemicals was leading to declines in bird populations?

  • Silent Spring (1962) by Rachel Carson 
  • The Sheep Look Up (1972) by John Brunner
  • The Lorax (1971) by Dr. Seuss
  • A Civil Action (1995) by Jonathan Harr
  • 3. 
    Which of the following is not considered a major pollutant in aquatic environments?

  • Sulfur dioxide
  • Cooling water discharge from power plants
  • Sewage
  • Petroleum
  • 4. 
    How many metric tons of plastic waste are thought to be discharged into the oceans every year?

  • Between 8.4 million and 16.2 million
  • Between 1.3 million and 2.9 million
  • Between 3.5 million and 6.9 million
  • Between 4.8 million and 12.7 million
  • 5. 
    Of the following, which is the most effective strategy to stem the impact of toxic waste?

  • Stopping the production of polluting materials 
  • Recycling polluting materials
  • Reusing raw materials
  • Raising taxes on companies that pollute
  • 6. 
    Which chemical below is a key component of photochemical smog?

  • Lead
  • Sulfur dioxide
  • Ozone
  • Carbon dioxide
  • 7. 
    Which three chemical elements are the most important for plant growth and make up the bulk of chemical fertilizers?

  • Carbon, hydrogen, and oxygen
  • Phosphorus, potassium, and nitrogen 
  • Lithium, silicon, and nitrogen
  • Phosphorus, iron, and nitrogen
  • 8. 
    Gaseous compounds of which two chemical elements are primarily responsible for the breakdown of Earth’s ozone layer?

  • Carbon and nitrogen
  • Chlorine and oxygen
  • Chlorine and bromine
  • Hydrogen and carbon
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