Question

Conversion of complex food into simple
from.
Soluble​

Answer 1

Answer:

Respiration

Explanation:

The process in which Conversion of complex food into simple form is called respiration

Answer 2

Digestion is the answer to your question.

Explaination:

Digestion is the breakdown of large insoluble food molecules(or complex food) into small water-soluble food molecules (or simple form of food).