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Across
- 1. Vibrations that travel through the air and are heard by ears
- 6. The breaking down of rocks by weather, water, and living things
- 7. A state of matter that flows and takes the shape of its container
- 8. A mixture where one substance dissolves completely in another
Down
- 2. Any living thing such as a plant or animal
- 3. The process of getting bigger or more developed
- 4. A form of energy that makes things warm
- 5. The bending of light as it passes from one material to another