General revision 2

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Across
  1. 2. , A blood vessel that transports blood from all body parts toward the heart
  2. 8. , A blood vessel that transports blood away from the heart to all body parts
  3. 10. a process by which the plant makes its own food
  4. 11. , the thinking part of the brain
  5. 13. , sharp pointed external structure that help the predator to catch and tear its prey
  6. 14. it is the heart rate that increases by doing exercise
  7. 15. , transport water and nutrients upward in the plant
Down
  1. 1. , an internal structure that responsible for reproduction of the plant
  2. 3. a rigid support system that helps in the movement in the body and give it its shape
  3. 4. , a rigid tube through which the air passes from the nose to the lungs
  4. 5. , the brain part that responsible for motion coordination
  5. 6. transport the food (sugar) to all plant parts
  6. 7. , external structure that help the birds to fly
  7. 9. a muscle below the lungs that help the flow of air in and out of the lungs
  8. 12. , external structure that protect the bear from cold weather