• 1. 
    Which of the following is not a natural cause of water pollution?

  • Animal waste
  • Volcanoes
  • Oil spills
  • Algae blooms
  • 2. 
    What type of water pollution can occur when sulfur dioxide gets into the Earth's atmosphere?

  • Acid rain
  • Oxygen depletion
  • Oil spills
  • Sewage pollution
  • 3. 
    Where did the Exxon Valdez oil spill take place?

  • In the Gulf of Mexico
  • Near China
  • In the Indian Ocean
  • Off the coast of Alaska
  • 4. 
    What can happen to fish when there isn't enough oxygen in the water?

  • They can suffocate
  • They can no longer float in the water
  • They grow really big
  • They can't see
  • 5. 
    True or False: Many people on Earth do not have access to clean water.

  • FALSE
  • TRUE
  • 6. 
    What type of water pollution is produced by farm animals?

  • Construction
  • Pesticides and herbicides
  • Sewage
  • Animal waste
  • 7. 
    What type of water pollution is produced from chemicals used to kill bugs and weeds?

  • Animal waste
  • Sewage
  • Pesticides and herbicides
  • Construction
  • 8. 
    How can you help prevent water pollution?

  • All of the above
  • Don't use weed killer in the yard
  • Scrape plates clean
  • Don't put grease in the kitchen drain
  • 9. 
    Around how much of the Earth's water is fresh water?

  • 10%
  • 5%
  • 1%
  • 20%
  • 10. 
    True or False: Although water pollution is bad, it doesn't actually cause anyone to die.

  • TRUE
  • FALSE
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