Mention any two events that are inhibited by the intake of oral contraceptives pills to prevent pregnancy in humans

Oral pills are a type of hormonal contraception.They contain progesterone like hormone and prevent pregnancy in following ways:
  1. They prevent ovulation, thus provide contraception.
  2. They also thicken the cervical mucus, and make it difficult for sperms to enter the cervix,  which provides additional factor to prevent pregnancy.

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