What happens to the force of gravity between two objects as they move farther away from each other?

The gravity they have stays the same all the time unless their mass decreases, but they have less gravitational force on each other as they move apart.  

plant because they survive by water, sunlight, ex.

explanation:

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.