Across
- 2. a crack in the earth's crust
- 4. basin the area drained by a river and its tributaries
- 6. springs etc
- 7. The amount of space something occupies
- 11. The tendency of water molecules to stick to each other
- 12. the area where a freshwater stream or river merges with
- 13. microscopic life form; microorganism; germ
- 16. rock layers
- 17. into a body to produce immunity to the virus
- 19. of water; bottom-dwellers
- 20. column
- 22. Measure of the amount of matter in a substance
- 23. row on periodic table
- 25. free-swimming animals that can move throughout the
Down
- 1. Kingdom composed of heterotrophs; many obtain energy
- 3. the area of land that is drained by a water system
- 5. no longer in existence
- 7. substance prepared from killed or weaken viruses and
- 8. underground bed or layer yielding ground water for wells
- 9. Tiny algae and animals that float in water and are carried
- 10. waves and currents
- 14. organisms that live on the bottom of the ocean or other
- 15. the tendency of water to stick to other substances
- 16. plant, or fungus
- 18. yield the total quantity of crop that the land produces
- 21. water that fills the cracks and spaces in underground soil
- 23. A eukaryotic organism that cannot be classified as an
- 24. nutrients from dead organic matter