Answer:
that would be a tramway, because it wouldn't be ahead track, or coal train depending on the type of mine, the cars are typically called tramways just to generalize them, because they were in use in all sorts of different types of mines.
The Texas vegetation region which is most densely populated would be D - plain. The reason for this is that there isn't much vegetation going on in Texas, but what is going on is called a plain. This isn't comparable to a subtropic area where the vegetation is very thick and big.
Answer:
oil reserves is the answer.
