Answer:
6 is the right answer I know cause I like science
Answer:
Gravity is very important for us,animals and plants. We could not survive Earth without it. The sun's gravity keeps Earth in orbit around it, keeping us a good distance away from it (the sun). Gravity is holding down our atmosphere and the air we need to breathe along with it.
How much it has to drop and how heavy it is. Hope this is what you're looking for:)
30% should be the percentage of oxygen if the total mass of fe2o3 is 160.
