Answer:
it helps researchers sense things on earth. they are usually on aircraft or in a satellite.
Explanation:
it collects data from a different level detecting the energy from the earth. this energy comes naturally from the earth's surface. it even most commonly picks up reflected sun light (which is also a source of radiation)
Grasslands would be reccomended
It should be where the rivers separate through Nigeria
I think it’s Egypt, Kush and Axum
