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.

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Presentation transcript:

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.

Two Laws that Allow Ecosystems to Function: #1 The Flow of Energy The Sun is the ULTIMATE source of energy for living things

Two Laws that Allow Ecosystems to Function: #2 The Cycling of Nutrients Nutrients = Water, Carbon, Nitrogen, Sulfur, Phosphorus

Basic Elements of Life Remember: CHNOPS C = Carbon H = Hydrogen N = Nitrogen O = OxygenP = Phosphorus S = Sulfur

Four Main Nutrient Cycles Water: H 2 O

Four Main Nutrient Cycles Carbon: C

Four Main Nutrient Cycles Nitrogen: N

Four Main Nutrient Cycles Phosphorus: P

How are nutrients (matter) cycled? Through living and non-living factors. Matter cannot be created or destroyed, but can be rearranged.

Why are nutrients cycled? If the earth doesn’t recycle these nutrient then they will run out

Hydrologic (Water) Cycle: What? Circulation of Earth’s water

Water cycle: Why? Water is a major part of every living thing. Water is LIFE

Water cycle: Components Transpiration: Plants release water Evaporation: Liquid to Vapor Precipitation: Rain, sleet, snow Runoff: Water moves across surface Infiltration: Absorb water Condensation: Vapor to liquid Watch Video

Water cycle: Problems Circulation of Earth’s water Watch Video

Carbon Cycle: What? Movement of carbon between organisms and their environment

Carbon Cycle: Why? Carbon makes up ALL living things; organic matter

Carbon Cycle: Summary Atmospheric CO 2 converted into carbohydrates by producers

Carbon Cycle: Summary Carbohydrates are consumed by organisms

Carbon Cycle: Summary Carbon is returned to the atmosphere through respiration, decomposition…..

Carbon Cycle: Summary And by burning fossil fuels Watch Video

Nitrogen Cycle: What? Circulation of nitrogen between organisms and the environment

Nitrogen Cycle: Why? Main part of nucleic acids (DNA, RNA, ATP) and proteins

Nitrogen Cycle: Components Tricky thing…. Nitrogen has to be “fixed” to be used by organisms

Nitrogen Cycle: Components Ways to fix… Lightning strikes

Nitrogen Cycle: Components Ways to fix… Bacteria

Nitrogen cycle: Diagram Fertilizer Nitrogen fixing Watch Video

Video explaining the Nitrogen cycle. It will have big words in it, but that just shows how detailed this process is. Watch Video