As far as I know both oxygenated and deoxygenated flow through diffent parts of the heart
Let them go ong. Like what the heck is the point of even holding them responsible
The answer is D.
There is no single topic sentence within this piece of writing. A topic sentence is used to summarize what is going to be, or what has been written about, and there is no such sentence within this piece.
Answer:
<em>the answer is modified block.</em>