Biogeochemical Cycles

Carbon Cycle

Nitrogen Cycle

Oxygen Cycle

How do humans effect the bio geochemical cycles - Carbon

They release extra carbon to the atmosphere with fossil fuels

How do humans effect the bio geochemical cycles - Nitrogen

Fertilizer adds more nitrogen to the soil and burning fossil fuels adds more to the air

How do humans effect the bio geochemical cycles - Water

Climate change affecting the rain and using too much of the water

What organisms in the soil are an important part of the nitrogen cycle

Bacteria

Nitrogen is needed by cells to build these two groups of molecules

Protein DNA

Nucleic acids

What does evaporation do

Separates water from the ocean from salt

How to all living things generate carbon into the air (specific word)

Cellular respiration

What chemical reaction adds carbon dioxide to the atmosphere (different specific word)

Combustion