BSA Lesson 6

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Across
  1. 4. This type of fish has no scales
  2. 6. An insects skeleton is called ____
  3. 9. Has stiff hairs on the bottom of its body that helps with movement
  4. 12. movement
  5. 13. Some animals use their skin to ___ from predators
  6. 14. Make a protective covering on the outside of fish
  7. 15. Insects have how man legs
  8. 17. Many boneless animals are ____
Down
  1. 1. a lightweight, flat structure on the outside of a birds body
  2. 2. Sharp structures used by some animals for protection
  3. 3. Helps a fish move, steer, and balance
  4. 5. When it contracts, it pumps blood through the body
  5. 7. Many animals with no bones live in the _____
  6. 8. Protect soft animals such as oysters and clams
  7. 10. When a muscle pulls on this it moves
  8. 11. Structure that relaxes and contracts to
  9. 14. Helps a snail glide on the ground
  10. 16. Has hollow and flexible bones