The pH of water determines the solubility (amount that can be dissolved in the water) and biological availability (amount that can be utilized by aquatic life) of chemical constituents such as nutrients (phosphorus, nitrogen, and carbon) and heavy metals (lead, copper, cadmium, etc.).
A huge Oa... A Major League Baseball team has 25 players on its active roster. Exactly how many of these are pitchers, and how many are position players, is up to the manager of each team and not dictated by rule. However, it is common for there to be 12 pitchers and 13 position players.
Generally, each MLB team has one AAA minor league team, one AA minor league team, two or three A teams and one ROOKIE team. On top of that there are leagues in the Dominican Republic and Mexico and Venezuela that MLB send players to play in or sign players locally and allow them to stay in their home country to play.