Answer:
The line that reflects the theme that science constantly changes our understanding of life is "Science! true daughter of Old Time thou art! Who alterest all things with thy peering eyes."
Step-by-step explanation:
The "Sonet - To Science" by Edgar Allan Poe refers to the fact that science enforces reality and because of that it has taken away from poets the ability to dream. The line: "Science! true daughter of Old Time thou art! Who alterest all things with thy peering eyes" is the one that reflects that science is constantly changes our understanding of life because it means that by looking at things through science, our understanding changes.