In Canadian football, while only 12* players are playing on the field at once, teams need more than just 12* players. They must have an offensive and defensive team. Most highâ¦ school football teams have 1st, 2nd, and 3rd string players, so thirty to forty players is a reasonable number.
Gastroenteritis may result from ingesting chemical toxins (see Chemical Food Poisoning). These toxins are usually produced by a plant, such as poisonous mushrooms, or by certain kinds of exotic seafood and thus are not the product of an infection.
Three Major Causes for Intestinal Gas. There are three ways that intestinal gas can be produced in the Gastrointestinal tract. The first is dietary, by production of gas inside the intestine. The breakdown of food in the lumen by bacterial metabolism can produce hydrogen, methane and carbon dioxide.