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Explore why New Zealand has such unique flora and fauna, and learn why long periods of geographical isolation. This less..

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New Zealand’s Unique Flora

If New Zealand has lots of unique animals, it's also got a whole lot of unique plants. Find out more about some of them,..

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Darwin and Natural Selection

This tutorial investigates the genetic diversity in more detail. It also delineates how certain alleles are favored over..

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A balanced diet is essential to a healthy organism. Insufficiency or too much of a particular element or compound, such ..