Grade 8 NS crossword

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Across
  1. 2. a substance absorbed by plant roots and used in photosynthesis
  2. 6. a gas released during photosynthesis and used in respiration
  3. 8. the green pigment in plant leaves that absorbs light energy
  4. 9. the process by which green plants use sunlight to make food from carbon dioxide and water
Down
  1. 1. a gas taken in by plants during photosynthesis
  2. 3. the process by which living organisms release energy from food
  3. 4. the ability to do work, released during respiration
  4. 5. the main source of energy for photosynthesis
  5. 7. a type of sugar made during photosynthesis and used as an energy source