As it stands, a handful of states - including Delaware, Nevada and New Jersey - are very close to offering regulated online poker. Nevada is the leader of the pack among US states when it comes to regulating online poker, bringing the country the first US-licensed real-money poker site in 2012.
Answer Wiki. Breathing pure oxygen kills you because it destroys the normal gas balance with CO2 (carbon dioxide) in the lungs required for effective oxygenation on the cellular level. That's why some modern lifesaving applications prefer using Carbogen instead of pure Oxygen. Carbogen is a 95:5 mixture of O2 and CO2.
But even pure oxygen can be dangerous when breathed under pressure. In fact, breathing pure oxygen while scuba diving below 25 feet can be fatal! So for very deep technical dives, the inert gas helium is often added into the gas mix; which can be heliox (oxygen & helium), or trimix (oxygen, helium, and nitrogen).