Two tectonic plates of different densities collide. which of the following could form at the plate boundary?
island
mid-ocean ridge
rift valley
trench
volcano
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Population of this city. also, look for information on available public transit, bike-sharing, and other commuting options. use the information you find and write about it promoting alternative transportation

Water flows along the east coast and across the western tropical pacific towards south america, while they both are directed towards that way,  el niño does not directly affect the southern flow of water along the coast. 

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