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What information can fossils add to phylogenies that cannot be obtained from living organisms?

You know that the half-life of Carbon-14 is 5730 years. You are studying a sample of animal bone, and you find that 25% of the expected amount of Carbon-14 is remaining in your sample. About how old is this sample? Write out your thought process. (4 pts)

In the Closest Pair of Points problem, what is the time complexity of the brute-force approach?

Which of the following best characterizes General Oliver Howard, the head of the Freedmen’s Bureau?

How is the Port Royal experiment in land distribution an example of the failures ofReconstruction?

Which of the following best characterizes the response of southern white people to the efforts of former slaves to acquire an education?

Former slaves soon discovered that the acquisition of land depended on __________.

Which statements correctly describe a neutral magnesium (Mg) atom in its lowest energy electron configuration? [Select all that apply.]

Which of the following would lead to an increase in electrostatic potential energy? I. An electron moves closer to the nucleus of an atom. II. Two protons move closer to each other. III. Two electrons move further apart.

Which of the following photons would have a longer wavelength than a photon whose energy is 55.0 mJ? [Select all that apply.]