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Earth’s Cycles of MatterH. Biology
Unit 1Chapter 3-3
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In one direction – it is a one-way flowHow do biological systems move energy?
How do biological systems move matter?Matter is recycledBiological systems do not use matter, they
TRANSFORM it.
Cycles of Matter
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What is a LIMITING NUTRIENT?When an ecosystem is limited by a single
nutrient.Examples:
Nitrogen – Farmer’s fields / algal ocean blooms
Cycles of MatterCYCLE: A group of processes in which matter and
energy move
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Carbon Cycle: Carbon is needed as a fuel for life processes.
Nitrogen Cycle: Nitrogen is used to build proteins in cells.
Phosphorous Cycle: Phosphorous is used to build cells.
Water Cycle: Changes in form of water.
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The Carbon Cycle
To Atmosphere: Burning fossil fuel, volcanoes, fires, respiration
To Biosphere: Photosynthesis, eating To Hydrosphere: Photosynthesis, eating, runoffTo Geosphere: Decomposition of organic matter
Carbon Cycle
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The Carbon Cycle
To Atmosphere: Burning fossil fuel, denitrification (Nitrates into N2)
To Geosphere: Nitrogen fixation (bacteria & lightning)= turns N2 into ammonia, adding fertilizer
To Biosphere: bacteria converts ammonia into nitrates/nitrites for producers to make proteins, consumers eat producers
To Hydrosphere: Runoff, leaching
Nitrogen Cycle
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The Carbon Cycle
To Atmosphere: DOESN’T HAPPENTo Geosphere: Runoff, dissolves in water, decomposersTo Biosphere: Eating, absorb through rootsTo Hydrosphere: Runoff, leaching
Phosphorous Cycle
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The Carbon Cycle
To Atmosphere: Evaporation, transpirationTo Geosphere: Precipitation, condensation, infiltrationTo Biosphere: Drinking, absorbed through rootsTo Hydrosphere: Runoff, leaching