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Bay (left) and chestnut (sometimes called "sorrel") are two of the most common coat colors
Layers of Rock Laid Down by Water
Earth’s history is divided into nested sets of time--eons, eras, periods, and epochs--and is called
Eighteen-year-olds were the largest age cohort in the first year of the war in both armies. Soldiers
Colon with diverticulosis. An inflamed or infected diverticulum is called diverticulitis.
The rock cycle and the Earth’s physical environment