Many processes occur in the digestive system. Which process is best classified as a chemical change? Select one:

Peristalsis in the esophagus

Absorption of water

Enzymes in the saliva break down carbohydrates

Teeth grinding candy
PLS I NEED HELP!!

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?