Suppose the sun had been born with less mass, making it a small, cooler star only able to heat everything around it to a level one-half as hot as its current temperature. according to the solar nebular theory, how would the formation of the solar system have been different?

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?