Across
- 5. the process of removing unwanted parts from something
- 7. water from rain or snow that flows over land before ending up in a body of water
- 8. a slow moving mass of ice usually made from compacted snow or mountains
- 9. a type of plant that grows in water such as seaweed
Down
- 1. a type of filter that separates out large particles that can get into water
- 2. a scientist that studies life in the oceans
- 3. measurement of the condition of water and how clean it is for living things
- 4. a large area of land that drains into a body of water
- 6. a sewer that drains excess rain and groundwater from streets parks and sidewalks