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.
MLB. 1  Active list - Also called the active roster, the 25-man is composed of 25 players who are playing for their Major League team. 2  Reserved list - Defined in Major League Rule 2, the 40-man roster is also known as the Major League Reserve List.