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Across
- 3. A curved piece of glass that bends light
- 6. A sudden shaking of the ground caused by movements deep inside Earth
- 7. The molecule inside cells that carries instructions for life
- 8. The power that makes things move or change
Down
- 1. A natural solid substance found in the earth
- 2. A mixture where one substance dissolves completely in another
- 4. Facts and information collected from experiments
- 5. The speed of something in a given direction