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Botanical Biodiversity: Smithsonian Scientist Helene Muller-Landau

What determines the variety of trees in a tropical forest? Is it the seed size? Perhaps seed-hungry animals? And what happens to forests that are being drastically changed by humans? Smithsonian Tropical Research Center Botanist, Helene Muller Landau, talks about her attempt to find answers to these questions. Video courtesy of Smithsonian Science.

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