carbon cycle

1. /The carbon cycle is the biogeochemical cycle by which ______? is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth
3. /the action of breathing
5. /water that falls from the sky, liquid not frozen
6. /the trapping of the sun's warmth in a planet's lower atmosphere, due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet's surface
9. /Volcanic action may also release carbon ________?

1. /the process of burning something
2. /the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.
4. /Nitrogen is essential for the formation of amino ____? to make proteins. The nitrogen cycle describes the ways in which nitrogen is recycled.
7. /Carbon in the air is attached to ______? and is known as a molecule called carbon dioxide
8. /most of the _________? that make up living tissue contain carbon
9. /rot or decompose through the action of bacteria and fungi