NATURE and ENVIRONMENT

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Across
  1. 3. kliima soojenemine
  2. 7. nature reserve
  3. 9. Estonian Museum of Natural History
  4. 11. a squirrel that can glide in the air
  5. 12. tasakaal
  6. 14. osoonikiht
  7. 15. endangered species
Down
  1. 1. an area of land with a group of energy-producing windmills or wind turbines
  2. 2. the trapping of the sun's warmth in a planet's lower atmosphere
  3. 4. biolagunev
  4. 5. happevihm
  5. 6. prolonged period of abnormally low rainfall
  6. 8. release of a liquid petroleum hydrocarbon into the ocean
  7. 10. ülerahvastatus
  8. 13. solution