Cycles of Matter.

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Presentation transcript:

Cycles of Matter

Cycles of Matter Water Cycle Oxygen Cycle Carbon Cycle Nitrogen Cycle Phosphorus Cycle

Energy flows one way Matter is recycled within and between ecosystems

Biogeochemical Cycles Biological systems do not use up matter They transform it Nutrients: all the chemical substances required to live are recycled through biogeochemical cycles

Water Cycle All living things need water

Evaporation: liquid atmospheric gas

Transpiration: “evaporation” of water from plant leaves

Condensation: water vapor in the air is changed to “liquid” water (cloud formation)

Precipitation: water released from clouds (rain, sleet, hail, snow)

Oxygen Cycle

Oxygen Cycle

Oxygen Cycle

Carbon Cycle

Carbon Cycle Biological Processes Photosynthesis

Carbon Cycle Biological Processes Animal Respiration

Carbon Cycle Biological Processes Decomposition of Plants & Animals

Carbon Cycle Geochemical Processes Release of CO2 gas by volcanoes

Carbon Cycle Mixed Biogeochemical Fossil fuels (burial of Carbon rich remains & their conversion to coal & petroleum)

Carbon Cycle Human Activity Burning Fossil Fuels Deforestation

Carbon Cycle

Nitrogen Cycle Nitrogen is needed to make amino acids N2 = 78% of earth’s atmosphere

Nitrogen Cycle

Nitrogen Cycle Nitrogen Fixation Converts N2  NH3 (ammonia) (certain bacteria do this) Other bacteria (in soil or legume roots) convert NH3 (ammonia) into NO 3 - (nitrate ions) or NO2 – (nitrite ions)

Nitrogen Cycle Nitrogen is found in waste produced by many living things

Nitrogen Cycle Also found in dead/decaying matter

Nitrogen Cycle Found in fresh and salt water

Nitrogen Cycle Used in plant fertilizers

Nitrogen Cycle Decomposers break down decaying matter into ammonia (can be taken up by producers) Other soil bacteria convert nitrates into N2 gas in process called “denitrification”

Nitrogen Cycle

Phosphorus Cycle Phosphorus: important part of DNA/RNA Uncommon in the biosphere

Phosphorus Cycle Found mostly in rock, soil, ocean sediments

Phosphorus Cycle Phosphorus does not enter atmosphere

Phosphorus Cycle Phosphorus does not enter atmosphere

Phosphorus Cycle

Cycles of Matter Water Cycle Oxygen Cycle Carbon Cycle Nitrogen Cycle Phosphorus Cycle