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The tundra at the base of the Torngat mountains in Labrador consists primarily of low-growing mosses
School-age children are often independent and industrious, with a developing sense of self-confidenc
Breast cancer. Notice the tumor growing within a lactiferous gland, which occurs in infiltrating duc
The Acheulean industry is typified by hand axes and cleavers.
Medicinal leeches on a patient’s neck. Today leeches are sometimes used in microsurgery to prevent b
While bored toddlers often need to have their attention