After the ice recedes, buried in the moraine and eventually in geologic layers below will be an unnatural concentration of a reddish metal, which briefly had assumed the form of wiring and plumbing. then it was hauled to the dump and returned to the earth. the next toolmaker to arrive or evolve on this planet might discover and use it, but by then there would be nothing to indicate that it was us who put it there which claim does the excerpt most clearly support?

if flooding were to go unchecked, steel support beams in buildings would rust.

what is your question?

i am a strong (insert gender here) my father and his brother were to, they were killed not by the cold, not by the bears or wolves that roam our streets at night, but by the   bolsheviks. we must stand up and fight communism or we all end up dead, starved dehydrated, enslaved. the time is now we must fight. lenin is a dangerous man but he can be stopped. so my comrades we shall siege there weapons tonight on ward. (rides away with ak(not invented yet) and sword in hand while on bear into snowstorm)