Final answer:
Castration and sterilization are processes used in biology to eliminate musky odor and prevent pregnancy or ejaculation.
Step-by-step explanation:
The question is about the process of castration and sterilization in biology. Castration is a procedure done on male animals including humans to eliminate their musky odor and prevent the passage of sperm during ejaculation.
Sterilization, on the other hand, can refer to a surgical procedure that eliminates the possibility of pregnancy in females or the ejaculation of viable sperm in males.