Selective breeding is a process where humans choose specific plants or animals to reproduce based on desired traits. For example, farmers might select cows that produce more milk or dogs that are friendly and good with children. This method helps enhance certain characteristics in future generations, making them more suitable for specific purposes. By carefully selecting which individuals to breed, people can create varieties that are stronger, healthier, or more productive. This practice is commonly used in agriculture and pet breeding, allowing us to enjoy better crops and pets that fit our lifestyles. Overall, selective breeding plays a significant role in improving the quality of life.