Answer:
I am flora not fauna. I am foliage not trees. I am shrubbery not grass.
I have married many woman but has never been married
I start new then become old. Start clean but become dirty. I usually start big then become little. What am I?
When I live I cry if you don't kill me I'll die.
What has roots that nobody sees and is taller than trees. Up up up it goes and yet never grows?
Why did Superman flush the toilet?