Light microscopes have a lower resolution because the refracted light waves spread out which make the image a bit blurred. Also, light microscopes can’t magnify as well as election microscopes. To observe internal structures with a light microscope, you usually need to use dyes. Hope this helped!
Replication starts at the ORIGIN OF REPLICATION.
In prokaryotes which has close double stranded DNA molecule, replication usually starts from a single origin of replication and it proceeds around the circle bidirectionally, that is, in both directions. The process of replication in prokaryotes is very rapid and it produces only a few errors.<span />
An example i can think of is...
the amount of salt present in human cells cytoplasm suggests we evolved from species in the sea
I think its a hope that helped :)