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Some of the bacteria that can fix atmospheric nitrogen, converting it into a form usable by plants.
Several species of squirrels have melanistic phases. In large parts of United States and Canada, the
Fibroid tumors, or leiomyomas. Fibroids develop from the uterus to form a variety of hard, round ben
Monstrous people from distant lands depicted in a fifteenth-century European woodcut.
Shirin Neshat, Rebellious Silence, from the series Women of Allah.
Because of immature visual-motor coordination, young children find it hard to throw and catch small ...