Science knowledge

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Across
  1. 3. The building block of living organisms
  2. 4. a part of the digestive system in which protein digestion takes place
  3. 5. the carrier on nutrients, oxygen and wastes in our bodies
  4. 6. system the system that controls our body
  5. 7. removal of wastes by the living organism
  6. 8. chemical reactions that releases energy from the food
Down
  1. 1. A process by which plants make their own food
  2. 2. green pigment which capture light energy in the plant cells
  3. 3. the gas plants take to make their food
  4. 6. Organelle that contains the cell genetic material