Humans and the Environment -Thurs class pages 261-279

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Across
  1. 2. When people kill out a specific species it is called direct________.
  2. 3. The ozone layer stops UV __________from hitting the Earth.
  3. 5. One solution to saving the environment is to ________.
  4. 7. Scientists are looking for cleaner and better ________energy sources so we don't keep polluting our environment.
  5. 10. One alternative energy source that is good for the environment is _________ energy.
  6. 11. If the ozone layer disappears, harmful UV radiation can reach Earth and cause skin ________.
  7. 12. _______resources are resources that cannot be replaced.
  8. 14. If the Earth gets too warm it can melt the ice and cause________.
  9. 16. When people put garbage in the water it is called water__________
Down
  1. 1. When people cut down trees it is called________.
  2. 4. Certain pollutions cause the ozone layer to get ________.
  3. 6. ________are chemicals that kill pests.
  4. 8. There is a layer of gas around the Earth called the ________layer.
  5. 9. ________happens when there are too many of a species and they exceed the carrying capacity of their environment.
  6. 10. People are afraid the Earth is heating up this is called global _________.
  7. 13. If pollution gets into the clouds it can cause _______rain.
  8. 15. Substances that make the environment unsafe to live in, are called_________.