Which was a major cause of enviromental pollution in American cities during the late 1800

coal mills and new inventions like the train that needed coal to power the engine, and the steam pressure was from the coal burning. that's why it's called a steam train .

well that depends on how deep the hole is. you'd first go through te crust of the earth, then the upper mantle, then the lower mantle then the outer core, then the inner cor then you'd be stuck in the core to melt.

he is known for discovering   the fossil of a female hominin australopithecine   known as "lucy" in the afar triangle region of hadar, ethiopia.

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