What chemicals are present in birth control pills?

Explanation

### Step-by-Step Solution:

1. **Definition of Birth Control Pills**:
- Birth control pills are a form of contraceptive method used to prevent pregnancy.

2. **Main Chemicals in Birth Control Pills**:
- The primary chemicals found in birth control pills are **progestogens**.
- In some formulations, progestogens are combined with **estrogen**.
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