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09Ecosystem%20servicesFQ - FocusQuestions:Ecosystemservices...

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Focus Questions: Ecosystem services 1.  What are heterotrophs?  Autotrophs?  What distinguishes them? 2.  What is the flow of energy through the biosphere?  Why is the sun important, and how do living  organisms avoid the second law of thermodynamics? 3.  What are trophic levels?  How much energy is transferred between levels?  How does this relate  to the second law of thermodynamics?  What does this mean for energetic or biomass production  that is required to support life at higher trophic levels? 4.  How does material cycle between biotic and abiotic parts of the ecosystem?  What is meant by a  reservoir?  What kinds of reservoirs exist?  5.  What kind of reservoirs exist for CHONPS?  What is the process of converting inorganic  elements into organic forms? 6.  What is the relationship between C, H, and O in terms of the cycling of matter in the biosphere? 
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