Unit 1 Review Mrs. Beck Biology

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Across
  1. 5. all living things need matter and...
  2. 9. when large groups of species die out
  3. 10. the time period that saw a huge explosion in biodiversity
  4. 12. the genetic code found in all living things
  5. 13. water sticks to other charged substances
  6. 14. all living things are made of
  7. 15. observations that are not number based
  8. 17. water molecules form these kinds of bonds between themselves
  9. 18. an observation that is NOT opinion based
Down
  1. 1. the state of internal balance that must be maintained by all life forms
  2. 2. water sticks to water
  3. 3. early life forms produced this gas by photosynthesis
  4. 4. an observation that is based on opinion
  5. 6. a dog and her puppies is an example of...
  6. 7. water molecules has slight charges to them which makes them _____
  7. 8. this group of organisms was alive at the same time as the dinosaurs
  8. 11. number based observations
  9. 16. as a group, species can do this over time
  10. 19. in science we write ____ based claims