Homework Help: sci/275

Posted by Shawn on Tuesday, December 9, 2008 at 10:26pm.

Review Ch. 5, The Flow of Energy Through Ecosystems. Then, complete Appendix C. · Post your response to the following: Identify the fruit or vegetable you selected and relate the second law of thermodynamics to the changes in energy observed in Appendix C. How did the amount of energy gained compare to the amount of energy lost as heat at the second through fourth trophic levels? Considering the amount of energy required to produce animal-based foods and goods, should humans change their habits so they consume products closer to the bottom of the food chain because it is more efficient?

sci/275 - Ms. Sue, Tuesday, December 9, 2008 at 10:31pm
A. apple

http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/seclaw.html

No.
sci/275 - jane, Monday, March 9, 2009 at 11:28am
Identify the fruit or vegetable you selected and relate the second law of thermodynamics to the changes in energy observed in Appendix CHow did the amount of energy gained compare to the amount of energy lost as heat at the second through fourth trophic levels? Considering the amount of energy required to produce animal-based foods and goods, should humans change their habits so they consume products closer to the bottom of the food chain because it is more efficient?
sci/275 - jane, Monday, March 9, 2009 at 6:43pm
Raw carrot 52 calories per serving.

Energy Calculator
Trophic level Type of producer or consumer Total energy available from previous level (100%) Energy from total gained by consumer (10%) Energy from total lost when consumed (90%)
First Primary producer 52 N/A N/A
Second Primary consumer 52 5.20 46.8
Third Secondary consumer 5.2 0.52 4.68
Fourth Tertiary consumer 0.52 0.052 0.468

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