Answer:
Deposit red liquid in me.
I am a word. I become longer when the third letter is removed.
you can throw me away but I will always be coming back
I have cities with no people forests with no trees and oceans with no water.
I drive men mad for love of me, easily beaten, never free. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?