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If you follow the shortest food chain in the food web below from aspen to owl, how many trophic levels are there?

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Hi all!   Another semester down and a fairly successful one at that. I had a strong performance on the SAT bio by a student (This student plans to take it again to go for the 800. I'm excited to help her get it this time!), I met some great new students for Biochemistry, Genetics, Inorganic chemistry, and bioinformatics, substantially improved my library of AP physics materials... read more

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