Geochemical Cycles

2. Organisms break down sugars to produce energy, carbon dioxide, and water.
4. The sun’s heat causes water to change from liquid to vapor
6. Water present on the ground soaks up into the soil
8. Nearly all of Earth's energy in the world comes from
9. Bacteria in the roots of plants convert nitrogen into usable forms such as NO2
10. energy cannot be created or destroyed, but instead it changes forms
12. The ability to do work and enables organisms to use matter in life processes
15. mass cannot be created or destroyed, but instead it transfers
16. A process where producers make glucose that contains carbon and stores chemical energy
18. Nitrogen is returned back to the atmosphere by bacteria as N2
20. The breakdown of dead organisms and wastes returns carbon dioxide, water and other nutrients back into the environment

1. Plants release water vapor from their leaves
3. Fungi and bacteria return nutrients from dead organisms to the soil
5. The burning of materials releases carbon dioxide, heat, water and other materials into the atmosphere
7. Formed from decomposing organisms buried deeply many years ago, burned during combustion and releases carbon dioxide
11. When nitrogen gets captured from the atmosphere by bacteria or even lightning
13. Precipitation that falls on land and flows into streams and rivers
14. Water vapor cools and returns to liquid to form clouds
17. Water that falls from the atmosphere (rain, snow, sleet, hail)
19. Anything that has mass and takes up space