Paper 2 revision - THE CONDITIONS FOR LIFE ON EARTH keywords

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Across
  1. 3. cycles which helped organisms evolve
  2. 6. deflects solar wind
  3. 7. most chemical reactions occur in this
  4. 9. involves evaporation of water
  5. 12. water that evaporates from plants
  6. 15. water absorbs this
  7. 16. on freezing - where water is most dense at 4C
Down
  1. 1. include oceans, rivers and lakes
  2. 2. usually between 0-35C
  3. 4. water has a high _____ i.e warms up & cools down slowly
  4. 5. csrbon that is taken up plants/sea
  5. 8. the distance from this was vital in conditions on Earth
  6. 10. the speed of this was vital in conditions on Earth
  7. 11. the _____ of rotation was vital in conditions on Earth
  8. 13. transport within ____ requires water
  9. 14. the Earth's _____was great enough to reduce loss of most gases
  10. 16. first occurred due to oxygen from the sea