What are implants? How do they help in preventing the fertilisation?

Explanation

**Step-by-Step Solution:**

1. **Understanding Fertilization:**
- Fertilization is the process where the male gamete (sperm) and the female gamete (ovum) fuse to form a zygote. This is the first step towards the development of a new organism.

2. **Definition of Implants:**
- Implants refer to a form of contraception that involves the insertion of a small rod or device under the skin of a woman’s arm. These devices release hormones that help in preventing pregnancy.

...