Answer: The sun has a wondrous effect on icy birch branches.
Explanation:
Robert Frost in this excerpt speaks of how birches are affected by ice and then by the environment around them from how the birches are bent by ice to how the icy branches are then affected by the wind, rain and sun.
At the end Robert describes the effect the sun has on the branches and notes how the sun enables the birches to shed to snow in such heaps that one might think a part of heaven has fallen. As heaven is considered so beautiful, it must mean that the effect the sun had was a beautiful and wonderful one.
Examples, one with a comma and one without:
Shakespeare was born in Stratford and went on to write Hamlet.
Shakespeare was born in Stratford, later writing Hamlet
Show a picture or something.
When the <em>two </em>ghosts appeared in my room, I was <em>too</em> shocked to move. I looked between them, back and forth, one<em> to</em> the other. They were standing, or well, sort of floating in a corner. Slightly shaking, I scooted backwards, pulling my bed covers up to my chin, <em>too</em> scared <em>to</em> do anything else. They didn't seem to notice me at first. Quickly and quietly, I slipped my toes out of bed, and snatched up my slippers. The <em>two</em> bunny noses stared back at me, and instead of putting them on, like I had originaly planned, BAM, I threw them as hard as I possibly could, maybe even <em>too </em>hard. I squeezed my eyes closed, thinking the worst, but when I cautiously opened them again, the <em>two</em> pale spectors who had been hovering in my corner had disapeared, never <em>to</em> be seen again.