Answer:
planets have a tendency to resist changes to their direction and speed of movement, This tendency to resist change is called inertia, and its interaction with the gravitational attraction of the sun is what keeps the planets of the solar system, including Earth, in stable orbits.
It protects life from the damaging rays of the Sun. Also provides air for life as well.
Answer:
it gave them water to use agriculture
The answer is permanent .. I think