The process of turning from liquid into vapor
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Seafloor Spreading. Seafloor spreading is a geologic process in which tectonic plates—large slabs of Earth's lithosphere—split apart from each other. ... The less-dense material rises, often forming a mountain or elevated area of the seafloor. Eventually, the crust cracks.
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Answer:
The early kings ruled over only their own city-states. Lacking a centralized government and leader, the ancient region was prone to internal fighting among the kings for land and resources. As early as the 4th millennium BCE, ancient Mesopotamia covered the region that is now known as Iraq.
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Answer: Molecular similarities provide evidence for the shared ancestry of life. DNA sequence comparisons can show how different species are related. Biogeography, the study of the geographical distribution of organisms, provides information about how and when species may have evolved.
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