Which best describes how computer simulations are used in science?
a) computer simulations scientists see very large objects.
b) computer simulations scientists see very small objects.
c) computer simulations scientists predict future events.
d) computer simulations scientists map unexplored places.

This is a 2017 topographic map of puerto rico in the united states, and i'm sorry that people there have suffered such a disaster. i want to ask, what do the yellow dots and areas represent on this graph? and the blue area and the little blue circle, and the little blue sign that looks like a signal tower, what do they stand for?