Question

1. landers and rovers are two types of unmanned space vehicles used to study mars. how do they differ in their functions on mars? landers can orbit mars and rovers cannot. landers are responsible for taking scientific instruments into space and landers act as rockets to propel the rover into space. rovers are mobile and landers are not. rovers are mobile and rovers are not.

Explanation:

Rovers are mobile and can move around on the surface of Mars to conduct scientific investigations. Landers are stationary once they touch - down and are mainly responsible for taking scientific instruments into space and acting as a base on the Martian surface. They cannot orbit Mars.

Answer:

Rovers are mobile and landers are not.