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Across
- 1. A push or pull that can change how something moves
- 5. A natural solid substance found in the earth
- 6. All the chemical processes in your body that keep you alive
- 7. How often something happens in a given time
Down
- 2. A community of living things and their environment working together
- 3. The speed of something in a given direction
- 4. The molecule inside cells that carries instructions for life