Animals

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Across
  1. 4. amphibians are classified as such because they have two ways to obtain ________ during their lifetime
  2. 9. worms would fall into this category
  3. 10. snakes, toads, and alligators use this to regulate their body temperature
  4. 11. What type of animals are multicellular?
  5. 12. organisms that have this arrangement do not have a balance to their body structure
  6. 15. these are what come together to create organs in multicellular, living organisms
  7. 17. these mammals include kangaroos and possums
  8. 20. these fun creatures have an endoskeleton that gives their body structure and protection
  9. 21. this is the type of mammal that you are
Down
  1. 1. if you can fold a piece of paper in half and the edges line up it is displaying this
  2. 2. arthropods wear this as an out layer of protection for their body
  3. 3. this group of animals is where you would categorize most animals on Earth
  4. 5. animal cells do not have this organelle because animal cells do not perform photosynthesis
  5. 6. I can't imagine it, but worms do have a __________
  6. 7. this is where a cnidarian would take food into its body
  7. 8. these are endotherms with feathers
  8. 13. animals that display radial symmetry often have ________ lines of symmetry
  9. 14. these vertebrates retain their throat pouch and use it for something else after birth
  10. 16. the notochord protects this in a vertebrate's body
  11. 18. how many main groups of invertebrates that have been identified by scientists
  12. 19. this is the level of organization that vertebrates are classified in