Explanation:
we are not given the pressure change, check yhe question please
Answer:
Chemical change
Explanation:
A chemical change is what happens. The food digested changes smell due to some enzyme the has acted on the food which catalyzes the rate of digestion. The enzymes acts on the food in order to speed up the rate of the reaction (digestion) and in turn causing the smell.
Try the solutions described in the attached picture, note the answers are marked with green colour.