Vertebrate Classification & Bird Design Concepts (5.1-5.6)

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Across
  1. 3. The animal a predator hunts for food
  2. 5. An animal that no longer exists is _________.
  3. 6. The unproven theory that animals slowly turned into other animals over millions of years instead of being created by God
  4. 8. Having a body temperature that stays the same temperature, no matter the environmental temperature
  5. 9. The part of a bird stomach used for grinding food
  6. 11. Designed to move easily through water or air
  7. 13. To keep an egg warm until it hatches
  8. 14. Small, fluffy feathers
  9. 15. Organs that filter dissolved oxygen from water for breathing
  10. 17. The natural home of an animal or plant
Down
  1. 1. An animal with a backbone
  2. 2. An animal that hunts other animals for food
  3. 4. Different types of animals
  4. 7. Having a body temperature that changes with the environmental temperature
  5. 10. Continental area
  6. 12. An animal without a backbone
  7. 13. A God-given ability or behavior that is inherited rather than learn learned
  8. 16. The force that keeps the bird or airplane in the air