B A D C (I think not 100% on this one)
For many species, there are often regional differences in their genes, although most of the time this differences aren't noticeable in their outward appearance.
Explanation:
The stratum corneum, which is the outermost epidermal layer, consists of dead cells
Answer: TEST YOUR STRENGTH!!!!! (mortal kombat reference btw) sorry if that dosnt help idk what it is