Aquatic Science: Impacts of Human Activities

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Across
  1. 2. an increase of nutrients, especially phosphorus and nitrogen, in a body of water that causes algae blooms that block sunlight and lower oxygen levels.
  2. 5. a body of water that is home to living and nonliving things.
  3. 6. animals or plants that are not native to an ecosystem but are introduced, often by humans.
  4. 8. an addition of harmful chemical substances into a body of water.
  5. 9. too much loud or harmful sound in the environment.
  6. 10. a barrier built across a river or stream to control water flow so it can be used in different ways.
Down
  1. 1. a change in the structure of a body of water.
  2. 3. an addition of natural substances into a body of water.
  3. 4. when too many fish are caught from a body of water faster than they can reproduce.
  4. 7. a change in temperature of a body of water.