The answer is B... im just making a guess so...
Ancient organism remains, fossil layers, similarities among organisms alive today, similarities in DNA and similarities of embryos.
Other reasons are
Not finishing the antibiotics.
Or
Taking antibiotics too often
Answer:
Although prokaryotes divide through binary fission, eukaryotes undergo a more complex process of cell division because DNA is packed in several chromosomes located inside a Cell dividing by mitosis.
Explanation:
Can i get brainlest