Fertilization, or is the union of a male sperm cell and a female egg cell, resulting in a zygote.

What is a possible consequence of abusing intravenous drug such as heroin? a-hiv transmission b-alcohol poisoning c-improving appetite d-lung cancer

Katie is in high school. what is the best example of how she can be proactive about her health and wellness

Recall what you know about common challenges to mental and emotional health. what are some signs or traits of individuals with low self-esteem, stress, depression, and mental disorders