Reinforement crossword

1234567
Across
  1. 1. Pumps the blood through the body.
  2. 3. Helps to breathe.
  3. 4. Nutrient that give us energy
  4. 6. you did a
Down
  1. 2. System that help us to breathe.
  2. 5. Nutrient that help build muscles
  3. 7. System in charge of digest.