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

Explanation

**Step-by-Step Solution:**

1. **Understanding Oral Contraceptive Pills (OCPs):** Oral contraceptive pills are medications taken by women to prevent pregnancy. They contain hormones that influence the reproductive system.

2. **Event 1 - Prevention of Ovulation:**
- OCPs inhibit the secretion of certain hormones from the pituitary gland, specifically luteinizing hormone (LH) and follicle-stimulating hormone (FSH).
- LH is crucial for triggering ovulation. By inhibiting LH and FSH, OCPs prevent the ovaries from releasing an egg (ovulation), which is necessary for fertilization to occur.

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