H& Env. pgs 261-279

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