Across
- 7. – The removal of undigested waste from the body.
- 8. – The basic unit of life.
- 9. – The process plants use to make their own food.
- 10. – A storage organelle in plant cells.
Down
- 1. – A gas needed for photosynthesis.
- 2. – The process of breaking down food into simpler substances.
- 3. – The most abundant gas in the atmosphere, needed by plants.
- 4. – The green pigment in plants that absorbs light.
- 5. – A gas needed for respiration.
- 6. – The rigid structure found in plant cells.