Breaking the body into systems is in most cases a lot easier for the students to understand instead of just doing it all at once
Infertility would be you answer
Answer:
in controlled experiment an independent variable is systematically manupulated and dependent variable is measured ; any extraneous variables are controlled
An abortion. It is carried out for many reasons including unwanted pregnancies, cases where the parents are too young, lack of funds to keep the baby, death of baby inside the womb etc.
