Across
- 1. Movement of water through soil
- 3. Compounds from long-ago plants and algae make these up
- 7. Bacteria converts nitrogen into ammonia, a form of nitrogen usable by plants
- 8. What flows directionally through Earth’s ecosystems, typically entering in the form of sunlight and exiting in the form of heat
- 12. The biological conversion of organic and inorganic nitrogenous compounds from a reduced state to a more oxidized state
- 13. What percentage of water is found in human cells
- 16. Resources being used up much faster than they can be produced by geological processes
- 19. The process that changes liquid water to gaseous water
- 20. Process of incorporating carbon from atmospheric carbon dioxide into cells
- 21. Organisms that produce their own food
- 22. Percent of nitrogen that makes up the earths atmosphere
- 23. When fossil fuels are burned, this is created and release in response
- 24. What percentage of your body consists of carbon atoms, by mass
- 25. Process by which some organisms use sunlight to synthesize foods
- 26. The conversion of soil nitrates to nitrogen gases by a diverse array of bacteria
Down
- 2. Converting the organic carbon back into carbon dioxide gas
- 4. The set of places where water can be found as it cycles on earth
- 5. Sun moves water into the atmosphere in the form of water vapor
- 6. Another name for the hydraulic cycle
- 9. Water found in the pores between particles in sand and gravel or in the cracks of rocks
- 10. Water on the ground gets soaked into the soil
- 11. Burning of coal, oil, and natural gas
- 14. Organisms that eat other organisms for food/energy.
- 15. Water enters through the roots, travels upwards through the vascular tubes made out of dead cells, and evaporates through the stomata
- 17. Water vapor in the atmosphere condenses into cloud and falls to the earth
- 18. The way an element or compound moves between its various living and nonliving forms and locations in the biosphere