You leave Alabama to attend a small college in the very high…

You leave Alabama to attend a small college in the very high elevations of central Colorado. Upon first arriving, you notice that you are out of breath frequently and can’t jog as far or as fast as you could back in Alabama. Why is this the case (the reason has something to do with the cardiovascular system, not the weather!)? After a couple of months, though, you feel fine. You return home to Alabama for Christmas and see a physician for a routine physical exam. You are told that your erythrocyte count is higher than normal. Why is this the case and how did this happen? If after returning from Colorado and you remain in Alabama, would you expect your erythrocyte count to remain the same?  Why or why not. View this scoring rubric to see how I will grade your answer (and to make sure you include all details).