Nov 04 2011

Species Interactions Slidedeck

Here is the slidedeck from today’s lesson about species interactions.  We discussed many examples of coevolution that produced these relationships and the population dynamics that result. You can play them within the blog or go to my Slideshare page to play them full size. I don’t like to use Power Point often, but it provides [...]

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Nov 01 2011

Mass extinction…what is the upside?

The last two days we discussed mass extinction, and viewed a PBS video about them. You can find some of the ideas at the link, below. After reading the intro, click continue, then click on the part of the timeline that says “hominids” (don’t start at the beginning) and then after reading about hominids, click [...]

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Oct 30 2011

Natural Selection & Speciation

*Note: This is a guest post by HannaT in the other class. In class on Friday, we discussed Darwin’s theory of natural selection. This lesson goes over questions 10-13 in the study guide. So first, we said that natural selection is the engine that drives changes in species, but there are misconceptions. The first is [...]

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Oct 30 2011

Evolution of Biodiversity

*Note: This is a guest post by MollyY in the other class since we have less students. In class on October 27th, we talked about the evolution of biodiversity. Biodiversity is essentially speciation minus extinction because speciation is “the evolution of new species” and extinction is “the death of the last member of a species.” [...]

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