Across
- 3. the process when it makes oxygen into carbon dioxide or for plants vice versa
- 5. responds if stimulated
Down
- 1. being a certain size then over a period of time getting bigger
- 2. not stationary when something gets from "a" to "b"
- 3. when something alive makes more of itself
- 4. the process of getting rid of waste
- 6. providing the food necessary for health