Andy is the captain of a fishing boat. in which economic sector does he work? a. primary b. secondary c. tertiary d. quaternary

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?

Name the three types of population distribution

Some of the incoming solar radiation is absorbed by the floor. identify the type of electromagnetic energy reradiated by the floor