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All of the first four civilizations had these characteristics in common EXCEPT: 

Which of the following types of radiation reduces the mass number by 4 AMU?

How did the Code of Hammurabi assume guilt? 

Which of the following valence numbers will make the best insulator?

Convert 75,000 µs to s.

Which field of history teaches us about prehistoric history? 

Which of the following statements is/are true in regards to x-rays and gamma rays? Gamma rays originate from the nucleus of a radioisotope and x-rays are produced outside of the nucleus in the electron shells. X-rays are a form of man-made electromagnetic radiation. Gamma rays are usually associated with alpha emission. X-rays and gamma rays travel both travel at the speed of light.

How did the Assyrian Empire deal with potential insurgencies or rebellions among conquered people? 

Which of the following atomic particles have the same AMU? Proton Electron Neutron

Which of the following conversions is correct in expressing absorbed dose?