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Across 4. The changing of a liquid into a gas 8. The top level of ground water in an aquifer 9. The changing of a gas into a liquid

Down 1. A body of water artificially made behind a dam 2. The measure of how salty water is 3. Water falling from the clouds as rain, sleet, snow, or hail 5. The layer of rock and soil that ground water occupies 6. When ice turns into water vapor without first melting 7. Frozen rain drops