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Across
- 1. The amount of space something takes up
- 6. A material that does not let electricity or heat pass through easily
- 7. Any living thing such as a plant or animal
Down
- 2. A natural solid substance found in the earth
- 3. How tightly packed the matter is in something
- 4. To write down information for later use
- 5. A mixture where one substance dissolves completely in another