Answer:
I help engines spin and pants stay up
People make me, save me, change me, and raise me. What am I?
Drop me and the world will shatter. You can always find me where you empty your bladder.
Take away my first letter take away my second letter take away all my letters and I would remain the same.
I am the kind of dog that chases anything red. What am I?
Give it food and it will live, give it water and it will die.