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Energy Flow Sun Light • _______________________________________________________________________________ • What % of the sun’s energy is used by living things? _______________________________ What happens to the rest of the sun’s energy? _____________________________________________ Producers / Autotrophs • _______________________________________________________________________________ • Producers use sun light or chemical compounds to synthesize their own food. • _______________________________________________________________________________ • Use energy from the environment to fuel the assembly of simple inorganic compounds into complex organic molecules. What is the difference between organic and inorganic compounds? ___________________________ ____________________________________________________________________________________ • These organic molecules combine to produce living tissue. Main Autotrophs • _______________________________________________________________________________ • _______________________________________________________________________________ • _______________________________________________________________________________ Photosynthesis Briefly explain what happens during photosynthesis. __________________________________________ _____________________________________________________________________________________ Chemosynthesis • Some organisms can produce their own energy by converting energy from inorganic chemicals to organic compounds. • This is called ____________________________________________. • Chemosynthesis is performed by __________________________________________________ • These bacteria make up a large portion of _____________________________ Consumers/Heterotrophs • _______________________________________________________________________________ • Many diff types of heterotrophs. 1. Herbivores – _________________________________________ 2. Carnivores – _________________________________________ 3. Omnivores – _________________________________________ 4. Detritivores – ________________________________________ 5. Decomposers – _______________________________________ Feeding Relationships • ____________________________________________________________________________ • Energy flows from the sun or inorganic compounds to autotrophs and then to various heterotrophs. Food Chains • A food chain is _________________________________________________________________ ____________________________________________________________________________________ Food Web • _______________________________________________________________________________ Trophic Level • Each step in a food chain or a food web is called a trophic level. • _______________________________________________________________________________ • _______________________________________________________________________________ Why are there rarely more than 4 or 5 levels? _____________________________________________ Ecological Pyramids • Diagrams that show the relative amounts of energy or matter contained within each trophic level. Energy Pyramid • Energy pyramid- shows the relative amount of energy available at each trophic level. • Only about ____________________ of the energy available within one trophic level is transferred to organisms at the next trophic level. Biomass Pyramid • ______________________________________________________________________________ • Expressed as grams per unit area. • The greatest biomass is __________________________________________________________ Pyramid of numbers • __________________________________________________________________________________