Final answer:
Hostile mucous causing infertility can be a result of various factors in the reproductive system. Inflammation and scarring caused by diseases such as sexually transmitted diseases or developmental problems can lead to infertility.
Step-by-step explanation:
Hostile mucous causing infertility can be a result of various factors in the reproductive system. Inflammation and scarring caused by diseases such as sexually transmitted diseases or developmental problems can lead to infertility. Other factors that can affect fertility include inadequate nutrition, stress, toxins, smoking, injuries, and aging.