Which process requires energy to decompose a
substance?

electrolysis

Explanation:

Electrolysis is one process that requires energy to decompose a substance into another one.

Electrolysis is a chemical process which converts electrical energy into chemical energy.

This process actually involves the decomposition of ionic compounds when electric current is passed through into an aqueous solution or molten form of the compound via the electrodes.

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.

the answer is 0.42 is that is an option. this question provides no info