BIOGEOCHEMICAL CYCLES

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Presentation transcript:

BIOGEOCHEMICAL CYCLES

NEEDS OF ORGANISMS All organisms need more then just Energy 95 percent of body is made up of just 4 elements: Hydrogen Oxygen Nitrogen Carbon

RECYCLING IN THE BIOSPHERE Matter is recycled in ecosystems Biogeochemical cycles = chemicals are passed from one organism to another (BIO), and also travel through air and soil (GEO).

BIOGEOCHEMICAL CYCLES Matter can cycle through the biosphere because elements are not “used up,” but are only transformed.

Carbon Cycle One of the most important to humans because carbon is: one of the primary elements forming human tissues necessary to plants, the basis of human food

Carbon Cycle Important to the climate system : carbon dioxide (CO2 ) and methane (CH4 ) are greenhouse gases which help set global temperatures

Nitrogen Cycle Important cycle because: nitrogen is a necessary nutrient nitrogen is part of acid rain

Phosphorus Cycle Important because: Cannot be transferred from the ocean to plants very effectively. Incorporated into many molecules essential for life such as ATP (Energy source) and backbone of DNA and RNA

CYCLES – NITROGEN, CARBON, AND PHOSPHOROUS AIR SOIL LIFE

SUMMARY – VENN DIAGRAM Nitrogen Carbon Phosphorus C & N C, N, & P C & P N & P Nitrogen