Fossils found in layers of sediment give us clues to Earth's past. Based on the fossil record of this area, we can assume that over million of years. A. sea level receded
B. the galciers melted
C. the climate became colder
D. the continents
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There are few cells in the body that do not undergo mitosis: most somatic cells divide regularly, some more than others. take for example the cells that line the digestive tract. these cells must be frequently replaced because they are constantly eroded by the movement of food through the tract. what mechanism(s) is/are in place to ensure that these cells are exact copies of the mother cell