Simpler

To say that humans "came from our planet" isn't necessarily a true statement. Yes, humans have evolved from simpler organisms on this planet, but the origin of life was not necessarily on earth (ie, the concept of panspermia).

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... on how atoms and molecules react with one another. After all, if there weren't, I'd expect my last course in organic chem would've been much simpler! I mean it's all H, C, O, N, and S, the last 4 having alot of valency. I'm going to assume you don't know what "valency" means, because ...

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... http://users.ox.ac.uk/~jrlucas/legend.html What he was really arguing for was a hypothesis that each species had gradually developed from some simpler one, and the Survival of the Fittest as a partial explanation of how this had happened. To this Wilberforce presented scientific evidence http://users.ox.ac.uk/~jrlucas/legend.html ...

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It's not really a certain part. I'm looking for an explanation of it. There must be one a bit simpler than the textbook I have. I just need to explain it in class, so was wondering if anyone knew of a good site/suggestion of the whole process. Chris.

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... in cultured mink cells, and a defective virus, which is actually responsible for the immune suppression. These viruses, which are genetically simpler than HIV and other lentiviruses, nevertheless create an immune deficiency syndrome in the infected mice which may be used to study virus-induced ...

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