Answer:
I think The answer is sponge.
Explanation:
Condoms are also known as "barrier" methods of birth control; they physically block or otherwise prevent sperm from entering the uterus and reaching the egg for fertilization. The diaphragm, cervical cap, and sponge are used along with spermicide (a chemical substance that destroys sperm) to prevent pregnancy.
In a study, the independent variable is the thing that you change to see how the change produces different results. In this study, the independent variable would be the use of nicotine.
Answer:
The sperm helps the fertalized egg profuce fetus that is then made in a baby
Explanation:
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