Carbon Cycle

Photosynthesis, cellular respiration

_ and cellular respiration are the 2 main biotic processes of the carbon cycle.

cellular respiration

What is process 4?

Combustion

What process adds carbon to the atmosphere (in the form of CO2)?

CO2

Carbon (in the form of _) is removed from the atmosphere by producers that do photosynthesis.

Photosynthesis

____ removes CO2 from the atmosphere. This is only done by autotrophs. It also creates oxygen and glucose (sugar)

photosynthesis

What is process 2?

Consumption

What is process 5?

decomposition

What is process 7?

combustion (burning of fossil fuels)

What is process 1?

decomposition

What is process 6?

fossil fuels

formed by process 9

O2

molecular formula for oxygen gas

CO2

molecular formula for carbon dioxide

CO2

gas made by cellular respiration

O2

gas made by photosynthesis

greenhouse gases

gases in the atmosphere that trap heat (eg. water vapour, carbon dioxide, methane..)

Abiotic

Non-living

Biotic

Living

cellular respiration

Process that releases energy by breaking down glucose and other food molecules in the presence of oxygen to create carbon dioxide and water

Photosynthesis equation

6CO2 + 6H2O + light energy --> C6H12O6 + 6O2

Chemosynthesis equation

6CO2 + 6H2O + 3H2S -> C6H12O6 + 3H2SO4 (note that there is a different molecule in this equation compared to photosynthesis) chemosynthesis happens at the ocean bottom, no light!