Answer:
I am whole but incomplete. I have no eyes yet I see. You can see and see right through me. My largest part is one fourth of what I once was.
I break down buildings, I crumble mountains but you can't see me. What am I?
I regularly change shape yet remain a sphere. I am always there but not often seen. What am I?
Of the king I am blue and of the peasant I am red. Of the frog I am cold and of the dog I am hot instead. What am I?
I am easy to waste and unstoppable
Iām grown from darkness but shine with a pale light. Very round I am and always a lady's delight.