C. Antarctica because the rest are well put together. That is my best choice.
A: Temperature,climate,fertile land
( the three factors )
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)
