Across
- 2. this is a clear liquid that we drink
- 3. is a green substance
- 4. you only change one variable in an experiment
- 6. helps plants grow
- 9. photosynthesis need this object to work
- 10. you breath this in
Down
- 1. you breath this out
- 5. causes heat in your body and helps you breath
- 7. you put this in your hot drink
- 8. control all the functions in a cell