What do you understand by infertility ? Mention any three causes of infertility.

Explanation

### Step-by-Step Text Solution

**Step 1: Define Infertility**
Infertility is defined as the inability of a couple to conceive after having regular unprotected sexual intercourse for a duration of one year. It can occur due to various reasons, either one partner may not be able to contribute to conception, or the woman may be unable to carry a pregnancy to full term.

**Step 2: Identify Causes of Infertility**
There are several causes of infertility. Here, we will mention three significant causes:

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