Across
- 3. carrier of genetic information.
- 6. H2O running off a mountain or landform due to gravity
- 12. a cycle where nitrogen passes from air to soil to animals.
- 13. a bond between 2 molecules found in DNA
- 15. where a substance in the liquid or solid phase turns to gas
- 16. processes that supply animal cells with nutrients.
- 17. the process where plants use sunlight to create foods from carbon dioxide and water.
- 18. a layer of gases held in place by gravity
- 19. the part of the water cycle where a form of water falls from the sky.
Down
- 1. all forms of water on earths surface and atmosphere
- 2. the process where water cycles through earth's bodies of water and atmosphere.
- 4. a substance made up of amino acids and peptide bonds.
- 5. a region of the earth inhabitied by organisms.
- 7. the process of water moving through a plant
- 8. single celled arganism
- 9. the conversion of gas or vapor to liquid
- 10. are found in proteins.
- 11. the earth and rocks, minerals, and landforms on and exterior and on the inside.
- 14. how animals obtain nitrogen
