Final answer:
A birth control pill is a contraceptive method that is commonly used to prevent pregnancy. It contains hormones that work together to prevent ovulation, thicken cervical mucus, and thin the lining of the uterus. These actions make it difficult for sperm to reach the egg and for a fertilized egg to implant in the uterus.
Step-by-step explanation:
A birth control pill is a contraceptive method that is commonly used to prevent pregnancy. It is taken orally and contains hormones, typically a combination of estrogen and progestin, that work together to prevent ovulation, thicken cervical mucus, and thin the lining of the uterus. These actions make it difficult for sperm to reach the egg and for a fertilized egg to implant in the uterus.