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Across
- 3. The amount of matter in an object
- 6. A final decision reached after studying results
- 7. The invisible force that pulls things toward the Earth
- 8. All the chemical processes in your body that keep you alive
Down
- 1. A material that electricity or heat can pass through easily
- 2. A gas in the air that living things need to breathe
- 4. A sample of something used for study
- 5. The force that makes magnets attract or repel