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Across
- 3. A community of living things and their environment working together
- 4. A unit of information that passes traits from parents to children
- 7. A material that electricity or heat can pass through easily
- 9. To find the size, amount, or degree of something
Down
- 1. A glass container used in science experiments
- 2. The speed of something in a given direction
- 5. Vibrations that travel through the air and are heard by ears
- 6. A path that electricity travels along
- 8. A gas in the air that living things need to breathe