1. The Carbon Cycle Carbon is in….. all living things the atmosphere layers under ocean floor fossil fuels (coal, oil, gas)

2. Elements in the universe 1.Hydrogen (H) <= most abundant 2.Helium (He) 3.Oxygen (O2) 4.Carbon (C ) Hubble Space Telescope Near Infrared Camera and Multi-Object Spectrometer (NICMOS) shows a disk of gas and dust around a young star.

3. Earth’s carbon cycle: 2 parts Geological - takes millions of years Biological - takes days to thousands of yrs

4. Geological Carbon Cycle - millions of years - Carbonate rocks (calcium & magnesium) Weathering Erosion Subduction Eruptions

5. Biological Carbon Cycle - days to thousands of years - Starts with plants Photosynthesis Make carbohydrates Respiration Metabolism Decomposition by bacteria

6. Biosphere Atmosphere Land & ocean plants remove CO2 from the air Land plants store carbon in tree trunks & in soil Ocean plant plankton & animal plankton - carbonates settle to ocean floor

7. Coal, Oil & Gas “Fossil fuels”

9. Is this part of the Carbon Cycle? “Burning coal, oil, and other fossil fuels releases heat-trapping gases, such as carbon dioxide, into the atmosphere.” Burning fossil fuels produces carbon dioxide

10. “ More than half of the carbon dioxide emitted by the burning of fossil fuels is absorbed by the oceans, by plants, and by soils.”

11. Your Carbon Footprint