3.3 Biogeochemical Cycle 2016

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Biogeochemical Cycles:

Biogeochemical Cycles

Slide2:

Defined : Movement of water through the atmosphere 75% of the earth is water 99% of water undrinkable (salty & frozen) Water recycles over and over Water Cycle

Slide3:

Water rises into the atmosphere in two ways: Evaporation : Heat changes water from a liquid to a gas Transpiration : Water evaporates from the leaves of plants through openings called stomata How Does Water Go Up?

Slide4:

Warm, moist air rises and eventually cools Condensation : process where water vapor turns into a liquid Rain, snow, sleet, or hail falls when water drops become heavy ( Precipitation ) How Does Water Come Down?

Slide9:

Runoff : Water runs down hill into rivers, lakes, streams, oceans… Infiltration : Water soaks into the soil and collects as groundwater Process repeats Water on the Ground

The Hydrologic Cycle:

The Hydrologic Cycle transpiration evaporation

The Hydrologic Cycle:

The Hydrologic Cycle condensation

The Hydrologic Cycle:

The Hydrologic Cycle precipitation Animation #2

The Hydrologic Cycle:

The Hydrologic Cycle RUNOFF INFILTRATION Animation #2

The Hydrologic Cycle:

The Hydrologic Cycle transpiration evaporation Animation #2

Oxygen Cycle:

Oxygen Cycle Autotrophs: Release O 2 into atmosphere via photosynthesis All life: Absorbs O 2 to be used during cellular respiration Respiration: creates ATP energy for cells O 2 O 2

Carbon Cycle:

Carbon Cycle Carbon = (organic molecules) carbohydrates, proteins, lipids, nucleic acids Plants & autotrophs: Intake: Absorb CO 2 from atmosphere Create glucose & sugar via photosynthesis Output: Release CO 2 during respiration CO 2 CO 2

Carbon Cycle:

Carbon Cycle Consumers Intake: Carbon moves up the food chain as 1 feeds on another Output: Release CO 2 during respiration CO 2 CO 2 C C

Carbon Cycle:

Carbon Cycle Decomposers Input: Feed on dead organic matter Output: Release CO 2 during respiration Output: Organic molecules returned to soil during decomposition C C C

Carbon Cycle:

Carbon Cycle Human Industry Output: Release CO 2 into atmosphere when fossil fuels (coal, oil, natural gas) are burned CO 2

Nitrogen Cycle:

Nitrogen Cycle N = 78% atmosphere (most unusable) Soil Bacteria Nitrogen fixation: convert atmospheric nitrogen into ammonia Nitrification: ammonia converted into nitrates N 2 Ammonia Nitrates

Nitrogen Cycle:

Nitrogen Cycle Plants Absorb nitrates through their roots Nitrates

Nitrogen Cycle:

Nitrogen Cycle Animals Ingest nitrates through the food chain (plants eaten) Nitrates

Nitrogen Cycle:

Nitrogen Cycle Decomposers Return ammonia to soil by feeding on dead matter Ammonia Ammonia Ammonia

Nitrogen Cycle:

Nitrogen Cycle Lightning Energy breaks atmospheric nitrogen into Nitrogen oxide Nitrogen oxide falls in rain to soil

Phosphorus (P) Cycle:

Phosphorus (P) Cycle No phosphorus in atmosphere Rocks Phosphorus released by weathering of rocks P P

Phosphorus (P) Cycle:

Phosphorus (P) Cycle Plants Absorb P into their roots P

Phosphorus (P) Cycle:

Phosphorus (P) Cycle Animals Ingest P when plants eaten P continues to move up food chain P

Phosphorus (P) Cycle:

Phosphorus (P) Cycle Decomposers Breakdown dead matter and release P into soil P P

Phosphorus (P) Cycle:

Phosphorus (P) Cycle Human Contribution Adding excess P from fertilizers P washes into lakes, etc… Excess P causes extreme algae growth P P P P P P

Exit Ticket:

Exit Ticket Name and define the 6 stages of the water cycle. How is oxygen released into the atmosphere? In which cellular process is oxygen removed and used from the atmosphere? Which organic molecule is created by photosynthesis? In which cellular process is carbon dioxide released into the atmosphere? How are humans disrupting the carbon cycle? How does nitrogen fixation and nitrification differ? How do plants obtain nitrogen? Which objects release phosphorus over time? How are humans disrupting the phosphorus cycle?

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