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Which of the following is a possible reason for sleep? a) growth b)digestive c)speed d)intelligence

Chalk is an ionic compound. which is a property of all ionic compounds that makes chalkboard? particularly useful for writing on a a high melting point hardness and brittleness inability to dissolve in water a multicolored appearance

What the theory that the sun goes around earth was replaced with the theory that earth goes around the sun this was an exaple of a