Below is a list of possible challenges. Check all errors that you mentioned in your answer.

When does dna replication(make a copy of itself)?

Up until 1938, paleontologists accepted the idea that coelacanths (an ancient fish) went extinct at the time that they last appear in the fossil record, about 80 million years ago. but in 1938, a live coelacanth was discovered off the coast of south africa that was compared to the fossil record and found to be the same species what goal of science does this discovery represent

Use the distance formula to determine weather each pair of segments have the same length