Across
- 2. its a green substance in a plant
- 5. scientists only ever change one variable in an experiment
- 7. our breathing cycle that makes us warm
- 8. how our plants develop and grow and how they do it
Down
- 1. we breath it in.
- 2. we breath it out.
- 3. you need it to see in the dark
- 4. its something clear we drink
- 6. its something sweet that u might put on your breakfast
- 9. something that controls all of our cells