What statement best describes what a circle graph shows? A. The average of a data set
B. A frequency distribution
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C. The relationship between two variables
D. Data as proportions of a whole

The minerals found in bones are deposited by living cells called

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false