Earth and Space

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Across
  1. 3. you find fossils in it.
  2. 4. getting use to the environment.
  3. 5. when a storm come there is rain thunder and lightning.
  4. 7. dissaperance of 96% of marine species and 75% of land species.
  5. 8. you find this bone/rock in a sedimentary-rock.
  6. 9. disappearance of more than 50% of fish,sponges and corals.
  7. 10. dissaperance of about 50% of animal species.
  8. 13. when all of a species die.
  9. 14. a group of living organisms consisting of similar individuals.
Down
  1. 1. when this thing blows up it releases magma and smoke.
  2. 2. dissaperance of dinosaurs.
  3. 3. is a layer that is made up of sedimentary deposits.
  4. 6. a long and distinct period of history.
  5. 11. dissaperance of 70% of marine species(corals and fish).
  6. 12. it is big,round and hot.
  7. 13. naturally occurring substance.