HOW DOES CARBON DIOXIDE MOVE THROUGH THE EARTH, OCEANS AND AIR?

THE CARBON CYCLE

Pool Amount in Billions of Metric Tons Atmosphere 578 (as of 1700) - 766 (as of 1999) Terrestrial Plants 540 to 610 Soil Organic matter 1500 to 1600 Ocean 38,000 to 40,000 Fossil Fuel Deposits 4000 Marine Sediments and Sedimentary Rocks 66,000,000 to 100,000,000

Where is CO2 on Earth?

Carbon is stored on our planet in the following major pools: • as organic molecules in living and dead organisms found in

the biosphere; • as the gas carbon dioxide in the atmosphere; • as organic matter in soils; • in the lithosphere as fossil fuels and sedimentary rock

deposits such as limestone, dolomite and chalk; • in the oceans as dissolved atmospheric carbon dioxide and

as calcium carbonate shells in marine organisms.

http://www.nationalfuelgas.com

                                              http://www.upl.cs.wisc.edu/~stroker/

jungle.jpg

JENNY HAGER/ THE IMAGE WORKS

Organiccarbon

Coal

Oil

http://www.summerclouds.com/Vero/Sea%20Shells.jpg

http://educate.si.edu/lessons/currkits/ocean/

http://www.cmas-md.org/Images/Sanjay/UnivTop4.jpg

Inorganiccarbon

Seashells

Coral

PhotosynthesisCellular RespirationThe Role of OceansFormation of Fossil Fuels

The BIG Picture:

6 CO2 + 6 H2O + Energy

C6H12O6 + 6O2

Photosynthesis

C6H12O6 + 6O2

6 CO2 + 6 H2O + Energy

Cellular Respiration

Fossil fuels – form from the remains of plant and animals.

The basic equation for all combustion reactions:

Carbon-based fuel + O2 Energy + Water + CO2

Combustion

Atmospheric CO2 Concentration