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Across
- 1. The natural home of an animal or plant
- 5. The smallest piece of matter that makes up everything
- 8. A form of energy used to power lights and machines
- 11. The wearing away of land by water, wind, or ice
Down
- 2. A change in a living thing that helps it survive
- 3. The act of moving or changing position
- 4. A tiny particle of light energy
- 6. A form of energy that makes things warm
- 7. The tiny building block that makes up all living things
- 9. A curved piece of glass that bends light
- 10. A hard solid piece of the Earth made of minerals