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.
A gas can be the result of a change of state, which is a physical change. The boiling of water produces water vapor; opening a carbonated beverage releases dissolved carbon dioxide. Explain how color can be classified as both a physical property and as one indication of a chemical change.