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

Explanation

**Step-by-Step Solution:**

1. **Definition of Infertility:**
- Infertility is defined as the inability to conceive or get pregnant. It refers to the condition where an individual or couple is unable to achieve pregnancy after a year of regular, unprotected sexual intercourse. This condition can affect both males and females.

2. **Infertility in Females:**
- In females, infertility may manifest as an inability to conceive or carry a pregnancy to term. This can be due to various factors affecting reproductive health.

...