Chapter_41_Learning_Objectives (2)

Chapter_41_Learning_Objectives (2) - Chapter Learning...

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Chapter Learning Objectives Chapter 41: How Do Ecosystems Work? 41.1What are the pathways of energy and nutrients? Describe the fundamental relationship between autotrophs and heterotrophs in an ecosystem o Autotrophs get energy from sunlight and heterotrophs consume the autotrophs for energy. Explain how the first and second laws of thermodynamics apply to ecosystems o The law of conservation of energy states that energy cannot be created or destroyed but only transformed. Plants and other photosynthetic organisms convert solar energy to chemical energy, but the total amount of energy does not change. The total amount of energy stored in organic molecules plus the amounts reflected and dissipated as heat must equal the total solar energy intercepted by the plant. The second law of thermodynamics states that some energy is lost as heat in any conversion process. We can measure the efficiency of ecological energy conversions.
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Chapter_41_Learning_Objectives (2) - Chapter Learning...

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