It helped them get to places
Earth is the only planet (so far) that's completely capable of supporting life due to the oxygen, atmosphere, carbon, water, and food. The only planet that's come close to being the second to supporting life is Mars, and that's due to the temperature and atmosphere of the planet.
I hope this helps!
mitosis or something like that
Are looking for an easy dieting way. This usually doesn't work. A better way is to keep a balanced diet and exercise frequently. Hope this helps!!!