Biogeochemical cycles
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Biogeochemical Cycles. Water Cycle. Defined : Movement of water through the atmosphere 75% of the earth is water 99% of water undrinkable (salty & frozen) Water recycles over and over. How Does Water Go Up?. Water rises into the atmosphere in two ways:

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Biogeochemical Cycles

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Biogeochemical Cycles


Water

Cycle

  • Defined: Movement of water through the atmosphere

  • 75% of the earth is water

  • 99% of water undrinkable (salty & frozen)

  • Water recycles over and over


How Does Water Go Up?

  • 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 Come Down?

  • 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)


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


Animation ChallengeWhose water cycle animation is better?Some guy on the Internet???OrMr. Kobe’s??


Animation #1

Water evaporates and rises


Animation #1

Condensation: Clouds forms


Animation #1

Precipitation: Water falls(rain, snow, sleet, or hail)


Animation #1

Runoff: Water runs downhill


Animation #1

Infiltration: Water soaks into the soil


Animation #1

Cycle Repeats!


Animation #2

The Hydrologic Cycle

transpiration

evaporation


Animation #2

The Hydrologic Cycle

condensation


Animation #2

The Hydrologic Cycle

precipitation


Animation #2

The Hydrologic Cycle

RUNOFF

INFILTRATION


Animation #2

The Hydrologic Cycle

transpiration

evaporation


Oxygen Cycle

  • Autotrophs: Release O2 into atmosphere via photosynthesis

  • All life: Absorbs O2 to be used during cellular respiration

    • Respiration: creates ATP energy for cells

O2

O2


Carbon Cycle

CO2

  • Carbon = (organic molecules) carbohydrates, proteins, lipids, nucleic acids

  • Plants & autotrophs:

    • Intake: Absorb CO2 from atmosphere

      • Create glucose & sugar via photosynthesis

    • Output: Release CO2 during respiration

CO2


Carbon Cycle

  • Consumers

    • Intake: Carbon moves up the food chain as 1 feeds on another

    • Output: Release CO2 during respiration

CO2

C

CO2

C


Carbon Cycle

  • Decomposers

    • Input: Feed on dead organic matter

    • Output: Release CO2 during respiration

    • Output: Organic molecules returned to soil during decomposition

C

C

C


Carbon Cycle

  • Human Industry

    • Output: Release CO2 into atmosphere when fossil fuels (coal, oil, natural gas) are burned

CO2


Nitrogen Cycle

N2

  • N = 78% atmosphere (most unusable)

  • Soil Bacteria

    • Nitrogen fixation: convert atmospheric nitrogen into ammonia

    • Nitrification: ammonia converted into nitrates

Ammonia

Nitrates


Nitrogen Cycle

  • Plants

    • Absorb nitrates through their roots

Nitrates


Nitrogen Cycle

  • Animals

    • Ingest nitrates through the food chain (plants eaten)

Nitrates


Nitrogen Cycle

  • Decomposers

    • Return ammonia to soil by feeding on dead matter

Ammonia

Ammonia

Ammonia


Nitrogen Cycle

  • Lightning

    • Energy breaks atmospheric nitrogen into Nitrogen oxide

    • Nitrogen oxide falls in rain to soil


Phosphorus (P) Cycle

  • No phosphorus in atmosphere

  • Rocks

    • Phosphorus released by weathering of rocks

P

P


Phosphorus (P) Cycle

  • Plants

    • Absorb P into their roots

P


Phosphorus (P) Cycle

  • Animals

    • Ingest P when plants eaten

    • P continues to move up food chain

P


Phosphorus (P) Cycle

  • Decomposers

    • Breakdown dead matter and release P into soil

P

P


P

Phosphorus (P) Cycle

P

P

P

  • Human Contribution

    • Adding excess P from fertilizers

    • P washes into lakes, etc…

    • Excess P causes extreme algae growth

P

P


Kobe Kuiz

  • 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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