The speaker is talking about the water. During winter, the water enters the cracks and freezes and expands. It breaks the stone and makes cracks and when the water melts the holes are bigger. What he is describing is mechanical weathering which is common in nature.
Idk but i going to guess uhhh the pentagram
It's a complete sentence and has to be connected to another one
Explanation:
What a beautiful girl sonam is
we should underline the word beautiful