Earth is the largest terrestrial planet in the solar system. Earth's huge size enables it to exert enough gravitational force to hold onto its . Mars, which is an inner planet, has a than Earth because of its size.

Lower gravitational force due to lower mass.

Explanation:

Mars has lower gravitational force than Earth because of its lower size because mass has a direct effect on gravitational force of an object. Earth has mass of 5.972 × 10^24 kg which is 10 times greater than mass of Mars which is 6.4171 x 10^23 kg. So due to earth's more mass, it has more gravitational force than planet Mars which has lower mass than earth.