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.
The 2005 salary survey by the National Conference of State Legislatures says that South Dakota State Senators and Reps earn $12,000 for a two year term, which would be a poverty-stricken annual salary of $6000 per year. One bright note is that they do make a per diem of $110 a day.he state senatorsâ pay scale dips down in South Carolina; state lawmakers pull in a lowly annual salary of $10,400, and they get only $95 per day for meals and housing. Let's not even compare this with the northern end of the ACC, Maryland (salary: $40,500).