| The fossil history of snakes is
very poorly known, as snake skeletons are very delicate and do not
fossilize easily. By carefully examining the fossil materials that
have been recovered, and by making comparisons of the anatomy of living
snakes and their relatives, biologists have been able to reconstruct
something of the evolutionary history of snakes. Snakes, like all
living things, are the product of the process of evolution, which allows
species to change over time in response to environmental factors to
produce entirely new species. |
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