Five / Pancha Niyama
The functioning of the principle of Dependent Origination applies to all things, both physical and mental, and expresses itself through a number of natural laws. These are:
Dhammaniyama: the natural law of cause and effect;
Utuniyama: the natural law pertaining to physical objects (physical laws);
Bijaniyama: the natural law pertaining to living things and heredity (biological laws);
Cittaniyama: the natural law governing the workings of the mind (psychological or psychic laws);
Kammaniyama: the law of kamma, which is of particular importance in determining human well-being and is directly related to behavior from an ethical perspective.
Click here :-1) http://www.jayarava.org/texts/the-five-Fold-niyama.pdf
2) http://www.sangharakshita.org/pdfs/revering-and-relying-upon-the-dharma.pdf
4) http://buddhism.about.com/od/basicbuddhistteachings/tp/The-Five-Niyamas.htm
5) https://dhivanthomasjones.wordpress.com/2013/06/05/the-five-niyamas-and-natural-order/