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Across
- 2. Related to the large plates that make up Earth's surface
- 5. A gas in the air that living things need to breathe
- 6. The slow process of living things changing over many years
- 7. When one substance soaks up or takes in another
Down
- 1. The force that makes magnets attract or repel
- 2. A tool that makes far-away things look closer
- 3. The part of an experiment that stays the same for comparison
- 4. An educated guess about what will happen in an experiment