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Veseljchak [2.6K]
3 years ago
9

By studying fossils, scientists have learned that

Biology
2 answers:
serious [3.7K]3 years ago
8 0
Answer choice D. both animals and plants have changed overtime
ivanzaharov [21]3 years ago
7 0

Answer:

D

Explanation:

both plants and animals have evolved over time

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A different flask of cultured cells contains 7 x 105 cells in 50 ml of medium. What is the concentration of cells (per ml) (0.5p
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To find the average number of cell cultured per area, you have to divide the total cell count with the total area. The cultured cells contains 7 x 10^5 cells count in 50 ml of medium area. The number would be: 7 x 10^5 cells / 50ml= 0.14x 10^5 cells /ml= 1.4 x 10^4 cells/ml

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