Reports of the National Center for Science Education (RNCSE)Resources Especially For |
Volume 29 (2009)
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Random Image GalleryGallery Archaefructaceae, the first flowering plant Archaefructaceae, which dates from 125 million years ago, is thought to be the first member of the plant group angiosperms. Male-Male Competition In some species, males engage in complex competitive behaviors, which in many cases necessitate growth of elaborate ornamental horns. |
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