Natural Selection.
It favors the better adapted organisms.
"REPRODUCTIVE ISOLATION" needs to occur for speciation to happen.....
Answer:
abnormal vaginal bleeding including between periods, after menopause and after intercourse
abnormal or increased amount of vaginal discharge
foul-smelling vaginal discharge
unusually long or heavy periods
bleeding after a pelvic exam or vaginal douching
Explanation:
Hope this helps! :)