Please answer ASAP!! Which term refers to a fertilized egg after the cells have begun to differentiate?

A. Blastocyst

B. Fetus

C. Embryo

D. Zygote

*will mark brainliest for first correct answer* which of the following is most likely to affect the biodiversity of a park ecosystem? a. less rain than usual for several months b. ongoing pollution from a nearby factory c. park rangers plant a new type of tree d. disease wipes out an entire population

Pepsin is an enzyme in the stomach that breaks polypeptides into amino acids. pepsin functions best at a ph of around 1.5. what would be the most likely result if the ph of the stomach were increased to 5

Place the steps tor the formation of the enzyme pepsinogen in correct order