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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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Bryophytes (nonvascular plants) are a plant group characterized by lacking vascular tissues. They include the mosses, th..

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Plants are responsible for incredible feats of molecular transformation. Plant processes, such as photosynthesis, photop..

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Independent Assortment and Crossing Over

This tutorial describes the independent assortment of chromosomes and crossing over as important events in meiosis. Read..

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This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..

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Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons an..