Across
- 1. chemical element with symbol Na and atomic number 11
- 3. change in the genes of a species
- 4. a light volcanic rock that is formed when lave solidifies quickly
- 5. warm low air pressure that is coming in one direction
- 6. rate at which something occurs
- 9. salty
- 10. body of a permeable rock that contains groundwater
Down
- 1. organ of a flower that consists of pollen containing anther
- 2. to make slippery or smooth
- 4. weight that swings freely from a fixed point
- 7. inanimate, not living
- 8. to keep in its current state