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)
Answer:
mabe so they needed to conserve space so that they can make the most money with the land that they have?
prepare their economies for the time when oil runs out - gradpoint
The rivers will go both north and sounth
