The Carbon Cycle. What is carbon?. An element Carbon exists in the nonliving environment (POOLS) as: - carbon dioxide (CO 2 ) in the atmosphere and dissolved in water - the lithosphere : carbonate rocks - deposits of coal, petroleum, and natural gas derived from once-living things
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The Carbon Cycle
What is carbon?
Carbon exists in the nonliving environment (POOLS) as:
- carbon dioxide (CO2) in the atmosphere and dissolved in water
-the lithosphere: carbonate rocks
- deposits of coal, petroleum, and natural gas derived from once-living things
-dead organic matter, e.g., feces in the soil
Carbon exists EVERYWHERE!
Carbon is exchanged between the active pools due to various processes. For example: Photosynthesis and respiration between the land and the atmosphere, and diffusion between the ocean and the atmosphere.
Who? Plants AND Animals
What? Sugar is broken down into carbon dioxide and water
6 Ways Carbon is moved
In a cycle
In the atmosphere, carbon is attached to oxygen in a gas called CO2. With the help of the sun, CO2 is pulled from the air to make plant food from carbon through a process called photosynthesis
Through food chains, the carbon that is in plants moves to the animals that eat them. Animals that eat other animals get the carbon from their food too.
Every time you exhale, you release CO2 into the atmosphere. Animals and plants get rid of CO2 through respiration too!
When humans burn fossil fuels to power factories, power plants, cars and trucks, most the carbon quickly enters the atmosphere as CO2.
The oceans and other bodies of water soak up some carbon from the atmosphere.
When plants and animals die, their bodies, wood and leaves decay bringing the carbon into the ground. Some become buried miles underground and will become fossil fuels in missions and millions of years.
But the last century CO2 levels have been increasing.
Burning fossil fuels
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