Ecosystem perspective - PowerPoint PPT Presentation

Food: An Ecosystem Perspective

Food: An Ecosystem Perspective. PreLab Activity. Biology 101 Laboratory Biology and Society Laboratory Exercise 10. Stump the Instructor. Bring in an obscure fruit. Try a farmers market or China Town. Report on:. What food plant did you bring in? Where does it come from?

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Energy Ratios

Energy Ratios. ecological efficiency. A = P + R + U. C = P + R + U + F. Is what we eat efficient from an ecosystem perspective?. Should we eat large mammals? (cows?) Is it sustainable with population growth?. Average human  eats 3,000 Cal/day Beef must eat 30,000 Cal corn

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