<span>The light has traveled through space for two and a half million light years. Someone can do a simple Google search to find this answer, but you need to use keywords from the question. After looking at a few sites that discussed astronomy, I compared the websites to see if the results were the same, and they were.</span>
I think it is c. bodies of water because hydro sounds like hydrate (water)
Mt Kilimanjaro can create its own climate due to how high it is, but most of the the temperatures are in the negatives.
Northeastern United States is the region next to the Great Lakes (for example: lake Ontario) - and in fact they form the border between the Northeastern United States and Canada. (Perhaps" Great Lake region" fits better the gap - the gap needs a phrase in singular form).
