Answer:
Magnetite is a black, opaque, magnetic mineral that leaves a black streak when rubbed across a hard rough surface. It is one of the most abundant metal oxides, and its crystal structure contains both the ferrous (Fe+2) and ferric (Fe+3) forms of iron ions.
Explanation:
Seattle would become colder because the ocean currents will cool down the shore of Seattle, which eventually cools down the land and atmosphere of the city.