Answer:
Because it helps kill germs.
B. more teens have unprotected sex when drinking alcohol
Answer:
I'm pretty sure its Skeletal System
Explanation:
BMI of less than 18 is considered underweight... However, when considering BMI, you do want to take into consideration muscle mass, height, etc...
Over 35 is obese
I would choose A, because having a BMI less than 35, 30 or 40 wouldn't be a risk factor.
PID which stands for pelvic inflammatory diseis
