It would be D because it describes the age of the sea floor
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:
Three Gorges Dam becomes popular tourist site. The Three Gorges Dam, the largest of its kind in the world, in central China has become a popular tourist site which attracted an estimated 100,000 tourists in the week-long May Day holiday, a travel agency executive said on Friday. The Three Gorges Dam includes three areas: the dam itself, a hydroelectric, and a system of locks. The height of the Three Gorges Dam is 185 meters (607 ft) above the sea level. The dam is about 2,300 meters (7,546 ft) long and about 115 meters (377 ft) wide.
Explanation:
hope this is enough :)