Some individuals in the rabbit population must evolve traits that improve their survival chances
10% of Energy is lost as heat. This is called The Ten percent law
The term being describe above is the hormonal method in which it prevents the egg from reaching the ovaries to prevent the women from being pregnant during intercourse. There are different types of hormonal methods being used, and it does not only prevent eggs in reaching ovaries but it prevents also sperm in reaching the uterus.