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Transcript
Chapter 55: Ecosystems Studying organisms in their environment: List the hierarchy of an ecosystem from smallest to largest: Ecosystem: - all organisms in a community (all biotic things) plus the _____________ factors Energy flow through an ecosystem: - remember, all of our energy originated from the sun Sunlight captured by ____________________ Producers are eaten by _____________ ______________ (herbivores) Primary consumers are eaten by _____________ ______________ (carnivores) Food chains: Trophic levels – feeding relationships 1st trophic level - ____________________ 2nd trophic level - ____________________ 3rd trophic level - ____________________ 4th trophic level - ____________________ - all levels connect to _________________________ (bacteria and fungi) Ecological pyramid: What is the 10 % rule? Why does only 10% of energy get transferred from one level to the next? What is the difference between a food chain and a food web? Cycles: Draw and label the carbon, water, and nitrogen cycles: Carbon: Water: Nitrogen: