SCI 275 Week 3 Energy Flow

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SCI 275 Week 3 Energy Flow

Resource: Chapter 4 of Environmental Science.



Answer the
following questions. Each response should be 3-5 sentences in length. Use your
textbook to develop your answers. 


  • Review Figue 4-10, "Flow of
    energy and biomass through a food chain" in Ch. 4 of Environmental Science
    Describe the trophic levels presented in the diagram. Explain what is
    meant by a producer, first-order consumer, and second-order
    consumer. 




  • Review Figure 4-12, "Energy
    pyramids in two food chains" in Ch. 4 of Environmental Science. The
    figure description states, " ...more food is available to those
    societies that eat lower on the food chain". Explain what this means
    by comparing pyramids (a) and (b). Do the benefits of eating lower on the
    food chain inspire you to make changes in your diet? Why or why not? 




  • Review Figures 4-13 and 4-14 in
    Ch. 4 of Environmental
    Science. 
    Summarize the steps of the carbon cycle. How is
    carbon cycled back and fourth between the atmosphere, and plants and
    animals? Why should people care about the carbon cycle? 




  • Review Figure 4-15 in Ch. 4
    of Environmental
    Science. 
    Summarize the steps of the nitrogen cycle. How
    is nitrogen cycled back and fourth between the atmosphere and the earth.
    Which species plays a prominent role in cycling nitrogen? Why should
    people care about the nitrogen cycle? 



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