Hich occurs during digestion? The mouth only allows for physical digestion.
The mouth only allows for chemical digestion.
Chemical digestion prepares the food for physical digestion.
Physical digestion prepares the food for chemical digestion.

Digestion can be either chemical or physical - physical digestion occurs when you chew food in your mouth (mastication) or chemical when it is broken down in the stomach (via HCl), just to give a few examples. There are many examples of both chemical and physical digestion.

Explanation:

answer; ( prices are sticky);

answer(b); ; ; the quantitative or qualitative variable for which the experimenter wishes to determine how its value is affected by the explanatory variable;