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