Oxygen serves as the final electron acceptor during aerobic respiration.
That demand should be little surprise given the leagueâs recent success. In 2011, average MLS attendance hit 17,872 to surpass both the NBA and NHL, and it has since increased to 18,611 fans per game. More impressively, the average franchise is now worth $103 million, up more than 175% over the last five years.
The 2015 Major League Soccer season features 20 total clubs (17 based in the United States, 3 based in Canada). The regular season is held from March 6 through to October 25, whereas the MLS Cup Playoffs will be held from October 28 to early December. The defending MLS Cup champions are the LA Galaxy, while Seattle Sounders FC are the defending Supporters' Shield winners.