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.).
No clue as to find out how many professional players are in those countries. Baseball in the US This information is for the US only: For Major League Players - There are 30 Major League teams each with a 40 man roster. 30 x 40 = 1200 Then, on average, each team has 6 farm teams in its system with a roster of 25 to 30 players. So 6 x 30 x 30 = 5400.
Major League rosters will expand to a maximum of 40 players on September 1st, giving each team the ability to add some much needed depth. The Major League Baseball regular season is slowly riding off into the sunset, with the pack separating into two clear packs; those vying for a playoff spot and those looking ahead to next season.