carbon cycle daniela cho denise lee sunny mun jeanne wojslaw period 5
TRANSCRIPT
Carbon Cycle
Daniela ChoDenise LeeSunny Mun
Jeanne WojslawPeriod 5
Photosynthesis
Photosynthetic organisms (plants) absorb CO2 through their pores and convert it to simple sugars. The plants remove CO2 from the atmosphere and animals gain CO2 by eating plants or other animals who have consumed plants.
Respiration
• Plants, animals, decomposers
• O2 used to break down organic compounds into CO2 & H2O
• Taking in O2 and oxidizing food→ release energy food contains
• CO2 → body → released → recycled
Deforestation
Forests take CO2 from the atmosphere and store it; therefore, when the trees are burnt or rot, the atmospheric CO2 concentration is increased. Deforestation contributes one-third of all CO2 releases caused by people.
Decomposition
Decomposers mostly live in the soil and they feed on decaying animals and plants. These microorganisms return carbon to the atmosphere as carbon dioxide by respiration.
Weathering of Rocks
Many CO2 atoms trapped in limerock
Water recedes → limerock exposed to elements → weathering → CO2 released → CO2 becomes part of carbon cycle
Fossil Fuels
Since the Industrial Revolution, we have been burning fossil fuels like coal and oil. The burning releases carbon dioxide into the Earth’s atmosphere and it is also absorbed by the oceans, plants, and soils.
Sedimentation
CO2 from water is converted into CaCO3 by shelled organisms.
Sediments from shelled organisms accumulate. Sediments rise up to dry land, then carbonates redissolve releasing CO2 into the air & water.
Amount of Carbon on Earth
• Atmosphere- 0.038% (1.9 trillion tonnes)
• Lithosphere- 0.032% (66-100 million gigatons)
• Biosphere-(540-610 gigatons) • Hydrosphere- 0.041%
Importance
Ecological importance: controls the climate change
Biological importance: humans contain 18% carbon by weight; plants use carbon dioxide and water to produce simple sugars (carbohydrates)
Works Cited1. Photosynthesis,http://grapevine.net.au/~grunwald/une/KLAs/science/photosynthesis.html ,Tuesday 23 2008.2. Carbon cycle, http://scienceclarified.com/Ca-Ch/Carbon-Cycle.html ,Tuesday 23 2008.
3. What Is Decomposition?, http://techalive.mtu.edu/meec/module10/Decomposition. htm ,Tuesday 23 2008.
4. Tiki the Penguin, http://tiki.oneworld.net/energy/energy.html ,Tuesday 23 2008.
5. Deforestation,http://www.botany.uwc.ac.za/envFacts/facts/deforestation.htm ,Tuesday 23 2008.
6. The Long-Term Carbon Cycle,7. http://www.carleton.edu/departments/geol/DaveSTELLA/Carbon/long_term_carbon.htm ,Tuesday 23 2008.
8. CHM 110 - CHEMISTRY AND ISSUES IN THE ENVIRONMENT,http://elmhcx9.elmhurst.edu/~chm/onlcourse/chm110/outlines/carbsediment.html ,Tuesday 23 2008.
9. Global Carbon Cycle, http://www.bom.gov.au/info/climate/change/gallery/9.shtml ,Tuesday 23 2008.
10. Sufi Meditation Muraqaba, 11. http://www.nurmuhammad.com/Meditation/Core/naqshbandimeditationillustration.htm ,Wednesday 24 2008
12. Geology.com, http://geology.com/articles/racetrack-playa-sliding-rocks.shtml,Wednesday 24 2008
13. Earth Cool, http://www.earth-cool.com/deforestation.htm,Wednesday 24 2008
14. Long Term Inorganic Carbon Cycle, 15. http://www.chemgapedia.de/vsengine/vlu/vsc/en/ch/16/uc/vlus/carboncycle.vlu/Page/vsc/en/ch/16/uc/chemicalcycles/newcarbon/carbonlongterminorg.vscml.html,Wednesday 24 2008
16. PhysicalGeography.net, http://www.physicalgeography.net/fundamentals/9r.html,Wednesday 24 2008
17. Britannica, http://www.britannica.com/EBchecked/topic/108636/chemical-element/81241/The-hydrosphere#tab=active~checked%2Citems~checked&title=chemical%20element%20%3A%3A%20The%20hydrosphere%20--%20Britannica%20Online%20Encyclopedia,Wednesday 24 2008
18. What is Carbon Cycle, http://www.oznet.ksu.edu/ctec/carbon/carboncycle.htm,Wednesday 24 2008
19. Infoplease, http://www.infoplease.com/ce6/sci/A0857177.html,Wednesday 24 2008
20. Spotlight Pacific, http://www.wwf.ca/satellite/wwfKids/s4w/0506/S4W_June2005_Part2.pdf,Wednesday 24 2008
