As altitude increases, the available amount of oxygen to sustain mental and physical alertness decreases with the overall air pressure, though the relative percentage of oxygen in air, at about 21%, remains practically unchanged up to 21,000 metres (70,000 ft).
  State legislators in Texas (both representatives and senators) make a salary of $7,200 per year.
Governor Salary. Likewise, governors' salaries vary greatly from one state to the next. Stateline.org compiled governors' salaries across the nation in 2007, and found that the governor of California made the highest yearly salary, at $206,500. Maine's governor made the lowest salary that year, at $70,000.he annual salaries of members of the U.S. House of Representatives are determined each election period by Congress. As of January 2010, each representative earns $174,000 annually. The Speaker of the House earns $223,500 annually, while the majority and minority leaders of the House each earn $193,400 annually.