What type of relationship is there between mass and force of gravity?

Since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. So as the mass of either object increases, the force of gravitational attraction between them also increases.

The more mass there is the more gravity is on that object

Explanation:

For example a balloon, it has less mass so it doesn't have a lot of gravity pulling it down. That's why it floats!

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.