1. Carbon Cycle By: Arianna, Caroline, Carly, and Haley

2. Most Common Chemical Forms of Carbon Proteins and carbohydrates

3. Most Common Chemical Forms of Carbon Carbon dioxide (CO 2 )

4. Most Common Chemical Forms of Carbon Sedimentary rocks- calcium carbonate (CaCO 3 ) ex. limestone

5. Most Common Chemical Forms of Carbon Carbonate-dissolved carbon dioxide (CO 2 3- )

6. Most Common Chemical Forms of Carbon Bicarbonate-dissolved carbon from decay (HCO 3 - ) ex. baking soda

7. How are these chemical forms created? ●Carbohydrates- product of photosynthesis (C 6 H 12 O 6 ) ●CO 2 - product of cellular respiration ● Carbonate-formed in aquatic carbon cycle between organisms and CO 2 dissolved in water ●Bicarbonate-dissolved from decay processes ●Calcium Carbonate- exists naturally in sedimentary rocks

8. how is this nutrient used by living organisms? ● Plants, algae, and certain bacteria remove carbon from the air and incorporate it into chemical compounds during photosynthesis ● These food-making organisms need carbon to create carbohydrates (essential for growth) ● Other living organisms, such as animals, need carbohydrates for energy but cannot create it on their own ● to obtain carbohydrates, herbivores eat green plants and break down the carbohydrates into useful substances and carnivores eat herbivores carbohydrates (sugars): act as source of energy

9. is carbon part of a particular macromolecule necessary for life? YES!!!!! !!!!!!! CARBOHYDRATES LIPIDS PROTEINS DNA

10. How have humans altered the cycling of carbon? ●Human activities include: ●industrial society uses energy ●acquired by: ●burning of fossil fuels( coal, oil, natural gas) ●combustion of wood ●burning of tropical forests These activities cause: ●carbon to reach the atmosphere Carbon Dioxide Emissions

11. Human impact on the Carbon Cycle( cont.) ●CO 2 global climate change ●Global climate change -rise in sea level, changes in precipitation patterns,increase in wildfires, flooding, drought, heat waves, extinctions, agricultural changes ● caused by/effects human population

12. How can we reduce the human impact on the carbon cycle? Recycle Limit industrial use Limit use of electricity use environmentally friendly vehicles

13. Does Carbon Cycle Travel Through the Atmosphere? YES!!!! ●Respiration and combustion (burning fossil fuels) ●Photosynthesis ●Cellular Respiration ●Occurs in the atmosphere, lithosphere, hydrosphere ●Air, soil, ocean ●Food chain ●Takes form of CO 2

14. Carbon Cycle Through the Atmosphere

15. LITHOSPHERE ●Carbon occurs in the lithosphere in ○fossil form (natural gas, oil, coal) ○sedimentary rocks(limestone, dolomite ●The amount of carbon in the lithosphere: 66 to 100 million gigatons (a gigaton is one million metric tons)

16. Carbon Cycle Through the Atmosphere HYDROSPHEREHYDROSPHERE Phytoplankton turns carbon into organic matter ●CO2 dissolves in the ocean to form hydrogen carbonate ions (HCO 3 - ) ●When some water is evaporated, the CO2 is released back into the atmosphere ●Some aquatic organisms use carbon as a key ingredient for their shells and skeletons

17. Carbon Cycle Through the Atmosphere SHELLS AND SKELETONS

18. Carbon Cycle Through the Atmosphere GLOBALGLOBAL SCALESCALE

19. Where is Carbon Cycle Naturally Fastest? ATMOSPHERE !! ● F A S T E S T because during photosynthesis, plants absorb carbon dioxide and sunlight to create fuel—glucose and other sugars—for building plant structures

20. Where is the Carbon cycle naturally the slowest? THE LITHOSPHERE! 99.9% of carbon is tied up in carbonate rocks (found in lithosphere) SO..... this is the slowest