Metro PCS's Best Toll-Free/800 Customer Phone Number This is Metro PCS's best phone number, the real-time current wait on hold and tools for skipping right through those phone lines to get right to a Metro PCS agent.
Making the world better, one answer at a time. Thin air is caused by low oxygen pressure at high altitudes. The lack of oxygen makes the air less dense. Thin air is caused by low oxygen pressure at high altitudes. The lack of oxygen makes the air less dense.
The two most common causes of hair thinning: 1) heredity and 2) scalp build up of dyhydrotestosterone (DHT) -- a natural compound that is known to clog the hair folilcles, thereby restricting blood flow to the hair root.