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Across
- 1. The amount of space something takes up
- 2. To write down information for later use
- 5. The natural home of an animal or plant
- 7. A pure substance made of only one type of atom
Down
- 1. Something in an experiment that can be changed or measured
- 3. A form of energy that makes things warm
- 4. A substance that living things need for energy and growth
- 6. A pattern of energy moving through space or matter