In 2011, 637,660 First Nations people reported being Registered Indians, representing 74.9% of all First Nations people, 45.5% of the total Aboriginal population and 1.9% of the total Canadian population.
Skin popping is any of several routes of administration whereby street drugs are injected or deposited under the skin. It is usually a depot injection, either subcutaneous or intradermal, although the term is rarely (and inaccurately) applied to intramuscular injection.
Cracking the neck joint (also called neck popping) or any joint actually leads to release of fluid or gas within the joints. It is an effect of a sudden development of temporary vacuum develops and is filled by gas, which was trapped in the joint fluid. Thus, when you stretch that joint, 'pop' or crack it goes.