Lesson 10 Animals Compete to Attract Mates

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Across
  1. 1. containing poison
  2. 5. to get something
  3. 7. to need something
  4. 8. to like something better than something else
  5. 10. sure to confirm that something is true
  6. 11. a detailed study of something to find out new information about it
  7. 12. the way something acts
  8. 13. into to bump into something
  9. 14. to cause sexual feeling in something
  10. 16. to show that something is true
  11. 18. someone whose job is to do experiments to learn more about the natural world
Down
  1. 1. having a lot of strength
  2. 2. off to make many people see something that one is proud of
  3. 3. very special
  4. 4. very big
  5. 6. out to cause someone/something to lose energy
  6. 9. violent
  7. 12. relating to what is necessary
  8. 15. to take something away
  9. 17. a present