Matter Cycling and Photosynthesis

3. A chemical element that is the basis of all organic compounds and is found in many forms in the environment.
4. The flow of water over the land surface, typically occurring after rainfall or snowmelt, and eventually reaching rivers, lakes, or oceans.
7. To take in or soak up a substance.
10. The process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.
11. The ability to do work or cause change.
13. The gathering or accumulation of water in lakes, rivers, oceans, or underground reservoirs as a result of precipitation or runoff.
16. Anything that has mass and takes up space.
18. Substances that provide nourishment and are essential for the growth and maintenance of organisms.

1. The process in which water vapor cools and changes from a gas to a liquid, forming clouds or dew.
2. The process through which plants release water vapor into the atmosphere through their leaves.
5. Any form of water that falls from the atmosphere to the Earth's surface, such as rain, snow, sleet, or hail.
6. The process of moving or circulating continuously.
8. A gas that is essential for most living organisms to survive and is produced during photosynthesis.
9. The process by which organisms exchange gasses with their environment, usually involving the intake of oxygen and release of carbon dioxide.
12. The natural light and energy from the sun.
14. The green pigment found in plants and algae that absorbs sunlight for photosynthesis.
15. The process in which water changes from a liquid to a gas by absorbing heat energy.
17. The layer of gasses surrounding a planet.