Fact 1: Gravity causes objects that have mass to be pulled down on a planet.

Fact 2: Planet Mars Mars is the fourth planet from the sun and is most like Earth.

Given the two facts above, answer the question "where does gravity cause objects that have mass to be pulled down to?" with the following options: 
- rocks
 - Large.
 - meters
 - matter
 - Mars
 - oceans
 - feet
 - ground


 

     Mars    