3.3 Humans and Population Pressures

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Across
  1. 3. Species introduced to the Great Lakes that is hurting the ecosystem
  2. 5. The addition of harmful substances into the environment
  3. 7. Until 300 years ago, the human population grew ______.
  4. 10. State with high water pollution from chemical runoff
  5. 11. Continent where humans first lived
Down
  1. 1. An example would be improved sanitation and medical care
  2. 2. Vines that are an invasive species and kill trees and plants
  3. 4. Catching and killing so many fish the population decreases rapidly
  4. 6. Which state has high pollution due to hog farming
  5. 8. Refers to a place where an organism can live
  6. 9. Today, the human population is growing ________.