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Across
- 2. The natural home of an animal or plant
- 7. Carefully watching and noting what happens
- 8. The force that slows things down when they rub together
Down
- 1. A state of matter that spreads to fill any space
- 3. How hot or cold something is
- 4. To sort things into groups based on their features
- 5. Related to the large plates that make up Earth's surface
- 6. Vibrations that travel through the air and are heard by ears