Answer:
Alternating
Explanation:
It is alternating because it is easy to distribute long distance.
Direct current is found in batteries and have large voltage drop over distance.
The physical law that explains that is the law of conservation of energy which states that he energy of an isolated sistem remains constant
If <em>the isotherms</em> are spaced closely together over some portion of the map, there is a drastic temperature change over that portion.
