Answer:
I start new then become old. Start clean but become dirty. I usually start big then become little. What am I?
I cause involuntary movements in your vehicle
I have cities with no people forests with no trees and oceans with no water.
I hold two people together but touch only one.
Lovely and round I shine with pale light grown in the darkness a lady's delight.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic