You get back into your time machine with your wacky professor and take off again. as your time machine lands, you see an unusual landscape before you. as you open the door you realize you cannot breathe. you quickly shut the door, realizing you are in the
a. late precambrian
b. early mesozoic
c. early precambrian
d. late cenozoic

birth control pills, the birth control patch, and the vaginal birth control ring are these hormones prevent pregnancy mainly by stopping ovulation

age might have something to do with behavior depending on the age because not everyone who is the same age acts the same like 2 year olds could have bad behavior but some won't.

i hope this : )

myth: mosquito bites transmit hiv. & shaking hands often transmits hiv. & oral sex never transmits hiv.

fact: breastfeeding can transmit hiv. & unprotected sex transmits hiv.