Across
- 3. nucleus
- 5. Helps plants grow
- 7. how plants convert sugar and energy from water, air and sunlight into energy to grow.
- 9. O2
- 10. the basic unit of a chemical element.
Down
- 1. ocean, sea, lake, river, stream, canal, pond, or puddle.
- 2. water (H2O) has three atoms, two hydrogen (H) atoms and one oxygen (O) atom.
- 4. the muscle
- 6. energy-carrying molecule found in the cells of all living things.
- 8. the smallest structural and functional unit of an organism