Which planet's surface has been explored by landers?

Shanti wraps the gift she is taking to a friend's birthday party. she doesn't have very much paper, so she does not overlap any of the edges. how much paper did it take to cover the gift?

What is the mostly tropical region in asia

What can happen to solar radiation when it enters earth’s atmosphere? check all that apply. it is absorbed by earth. it is reflected by clouds. it is reflected by glacial ice. it is condensed into visible light. it is amplified by water molecules.