wake-up 1.explain the difference between a primary consumer and a producer. 2.which model, food...
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Wake-up
1. Explain the difference between a primary consumer and a producer.
2. Which model, food chain or food web, is a better depiction of what happens in nature? Explain.
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Two Laws that Allow Ecosystems to Function: #1
The Flow of Energy
The Sun is the ULTIMATE source of
energy for living things
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Two Laws that Allow Ecosystems to Function: #2
The Cycling of Nutrients
Nutrients = Water, Carbon, Nitrogen, Sulfur, Phosphorus
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Basic Elements of Life
Remember: CHNOPS
C = Carbon H = Hydrogen N = Nitrogen
O = Oxygen P = Phosphorus S = Sulfur
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Four Main Nutrient Cycles Water: H2O
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Four Main Nutrient Cycles Carbon: C
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Four Main Nutrient Cycles
Nitrogen: N
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Four Main Nutrient Cycles Phosphorus: P
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How are nutrients (matter) cycled?
Through living and non-living factors.
Matter cannot be created or destroyed,
but can be rearranged.
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Why are nutrients cycled?If the earth doesn’t recycle these nutrient then
they will run out
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Hydrologic (Water) Cycle: What?Circulation of Earth’s water
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Water cycle: Why?
Water is a major part of every living
thing.
Water is LIFE
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Water cycle: Components
Transpiration: Plants release
water
Evaporation:Liquid to Vapor
Precipitation: Rain, sleet, snow
Runoff:Water moves across surfaceInfiltration:
Absorb water
Condensation:Vapor to liquid
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Water cycle: ProblemsCirculation of Earth’s water
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Carbon Cycle: What?
Movement of carbon between
organisms and their environment
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Carbon Cycle: Why?
Carbon makes up ALL living things; organic matter
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Carbon Cycle: SummaryAtmospheric CO2 converted into carbohydrates
by producers
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Carbon Cycle: SummaryCarbohydrates are consumed by organisms
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Carbon Cycle: SummaryCarbon is returned to the atmosphere through
respiration, decomposition…..
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Carbon Cycle: SummaryAnd by burning fossil fuels
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Nitrogen Cycle: What?Circulation of nitrogen between organisms and
the environment
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Nitrogen Cycle: Why?Main part of nucleic acids (DNA, RNA, ATP) and
proteins
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Nitrogen Cycle: ComponentsTricky thing….
Nitrogen has to be “fixed” to be used by organisms
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Nitrogen Cycle: ComponentsWays to fix…
Lightning strikes
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Nitrogen Cycle: ComponentsWays to fix…
Bacteria
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Nitrogen cycle: Diagram
Fertilizer
Nitrogen fixing
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Video explaining the Nitrogen cycle. It will have big words in it, but that just shows how detailed this process is.
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