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Convection currents are circular currents or movement within a
liquid due to different densities of the hotter and cooler parts.
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In 1838, the city of Boston established the first American police force, followed by New York City in 1845, Albany, NY and Chicago in 1851, New Orleans and Cincinnati in 1853, Philadelphia in 1855, and Newark, NJ and Baltimore in 1857 (Harring 1983, Lundman 1980; Lynch 1984).
the density of the tire would increase
I think is a………….,,,,,,,,,