Across
- 2. single celled algae with transparent cell walls
- 4. the speed of something in a given direction
- 6. existing or available in large quantities
- 8. area of low lying land next to river
Down
- 1. a structure built across a stream or river to hold water back
- 3. small endangered fish in the rio grande river
- 5. seriously at risk of extinction
- 7. a circular movement of water, causing a small whirlpool