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Across
- 5. The power that makes things move or change
- 6. A natural solid substance found in the earth
- 7. A tool that makes very tiny things look bigger
Down
- 1. The part of an experiment that stays the same for comparison
- 2. The band of colors formed when white light is split
- 3. A thread-like structure in cells that carries genetic information
- 4. A community of living things and their environment working together
- 5. The slow process of living things changing over many years