science

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Across
  1. 2. _____ have at least five pairs of jointed legs?
  2. 4. ______ means double life?
  3. 5. feeder, some eat whatever comes at them these are called _______?
  4. 8. Most of ________ are huge?
  5. 11. mammals, ______ have odd toed and even toed animals?
  6. 13. stage, larval stage, and adult stage, ___________are the stages of metamorphosis for frogs
  7. 17. underneath the sponges tentacles are lined with tiny stinging organelles called______?
  8. 18. _____are thin, glassy spines?
  9. 19. _____ needs warmness or coldness from where they are?
  10. 20. Most of ______ are not harmful?
Down
  1. 1. _____one of them is an opossum?
  2. 3. 90 percent of all arthropods are _____?
  3. 6. 95 percent of animals are ______?
  4. 7. ______is a bonelike substance that is softer than your bone?
  5. 9. _____mean it is independent of other organisms?
  6. 10. _____ means active at night?
  7. 12. ______ is to find their way in the dark?
  8. 14. ______ means jointed foot?
  9. 15. _____ are soft and have a shell?
  10. 16. ____ is having body temperature that stays the same?