A couple of weeks ago, I assigned a "diversity walk" to my evolution students. They were to spend about an hour walking around campus finding as many different living things as they could, and write down what they saw. At the same time, I was walking around with my camera talking pictures of all the critters I saw. The result was over 150 pictures in less than an hour (some were duplicates of the same organism). I then prepared a slide show of all the different things I saw and posted it for the students. They were to organize the slides into groups based on how they thought things fit together. Bottom line: I took a picture of some unique critter every 30 seconds as I walked around our campus - pretty much a suburban, highly altered environment. And there were lots of organisms I didn't photograph.
Where does all that diversity come from?
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