1. Daniela Cho Denise Lee Sunny Mun Jeanne Wojslaw Period 5
Carbon Cycle
Daniela Cho
Denise Lee
Sunny Mun
Jeanne Wojslaw
Period 5

2. Carbon Cycle

3. 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.

4. Photosynthesis

5. 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

6. Respiration

7. 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.

8. Deforestation

9. 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.

10. Decomposition

11. Weathering of Rocks
Many CO2 atoms trapped in limerock
Water recedes → limerock exposed to elements → weathering → CO2 released → CO2 becomes part of carbon cycle

12. Weathering of Rocks

13. 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.

14. Fossil Fuels

15. 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.

16. Sedimentation

17. Amount of Carbon on Earth
Atmosphere % (1.9 trillion tonnes)
Lithosphere % ( million gigatons)
Biosphere-( gigatons)
Hydrosphere %

18. 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)

19. Works Cited
Photosynthesis, ,Tuesday
Carbon cycle, ,Tuesday
What Is Decomposition?, ,Tuesday
Tiki the Penguin, ,Tuesday
Deforestation, ,Tuesday
The Long-Term Carbon Cycle,
,Tuesday
CHM CHEMISTRY AND ISSUES IN THE ENVIRONMENT, ,Tuesday
Global Carbon Cycle, ,Tuesday
Sufi Meditation Muraqaba,
,Wednesday
Geology.com,
Earth Cool,
Long Term Inorganic Carbon Cycle,
PhysicalGeography.net,
Britannica,
What is Carbon Cycle,
Infoplease,
Spotlight Pacific,

20. THE END