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.
Please help us. A die-hard baseball fan and I have a dispute to settle, and we know only you (and the elves) can help. How many players have played major-league baseball since the beginning of time? I say it has been around 20,000 to 30,000; my friend says it is well over 100,000.