Which country have world highest mountain?​

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?

Atopographic map of a section of washington state is shown here. which location is most likely to be subjected to flooding and run off during a period of extremely high precipitation? a) b) c) d)

Which process is a source of outdoor air pollution? check all that apply. burning gasoline at a refinery releasing fumes at a chemical plant emitting particles from a dump truck releasing radon gas from a generator emitting carbon monoxide from a heater