Across
- 3. ".....water" source of life for living things.
- 5. 1 liter of waste oil can pollute 1 ...... liters of drinking water.
- 6. "....water" refers to water pollution
Down
- 1. "water ....." mixing of used adjtttttchemicals(detergent, oil, factory waste) into groundwater.
- 2. movement of water in nature.
- 4. Structures usually built underground to collect