NEED HELP ASAP

There are many developmental stages that a human undergoes between fertilization and birth. Immediately following which stage does cellular differentiation begin?

A. Y
B. X
C. Z
D. W

Plz fast biotechnology is a growing field of applied biology. many crops such as corn have been engineered to be resistant to herbicides. therefore farmers can spray these chemicals to kill weeds growing near the crop without worries of killing the crop itself how does this type of biotechnology work? a. by changing the genetic make up of the crops. b. by causing the crops to kill the weeds. c. by changing the type of crops used. d. by changing the location of the crops.

Penelope studies how the structure and function of the nervous system is related to behavior. she is a psychologist

Explain how you will prioritize tasks in the medical office by immediate, essential, or optional. how will you re-prioritize when disruptions occur?