The primary responsibility of air traffic controllers is the separation of aircraft. They control traffic in and around airports and in the terminal and en route airspace in between. Controllers speak directly with pilots, notifying them of traffic or weather in there vicinity.
Answer:
b. Sunlight
Explanation:
A renewable resource is a resource that can be instantly replaced upon use. Sunlight gets its energy from the sun, which continuously shoot out sunlight throughout time. This means that as long as that part of the earth is facing the sun, they will continue to obtain solar energy. This makes sunlight a renewable resource.
