Vegetarians, thermodynamics and sustainability
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Why and how would it be beneficial to the earth if all humans became vegetarians? Discuss in terms of trophic levels, the laws of thermodynamics, energy flows and sustainability.
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Solution Summary
Examines the thermodynamic basis of energy flow through ecosystems and the resultant efficiency therein
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OK, quite simply it is because at every trophic level the capture of energy is about 10% of the available "food" energy. So of 100 units of sunlight hitting the earth a plant converts 10% of the sunlight to starches, a cow eats the plant and converts 10% of that (or 1% of the original) to meat. We go to McD's and eat a burger and convert about 10% of that meat to our own muscle mass (or 0.1% of the original light). We go surfing and a shark eats us ...
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