By looking at the map that shows a portion of the western United States and Canada. The graph that best represents the average monthly air temperature for both Vancouver and Winnipeg is the fourth graph or number 4.
A. Is covered with savanna.
The answer to the question asked above is that according to wiki pedia BosWash<span> is a name coined by futurist George Fieraru in a 1967 essay describing a theoretical United States megalopolis extending from the metropolitan area of Boston to that of Washington, D.C.</span>
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There's two main reasons why geologists think that the Earth's core is made out of iron:
1. The seismic waves that travel through the core are moving at a velocity that depends on the properties of the material the waves travel through, and the best fit in this case is the Iron (Fe).
2. The iron is the most abundant metal in the universe.
