Answer:
Genetic engineering!
Explanation:
When it come to human growth it going to be depended upon genetics.
Most likely Endocrinology. Endocrinology is a bracnh of biology and medicine that deals with the endocrine system ( the system that produces hormones).
Hello the correct answer is differentiation!
Bull Riding
People in this are die-hard tough power, dedicating their lives to taming a 1600-1700 pound bull.
