A scientific theory is a specific type of theory used in the scientific method. The term "theory" can mean something different, depending on whom you ask.
"The way that scientists use the word 'theory' is a little different than how it is commonly used in the lay public," said Jaime Tanner, a professor of biology at Marlboro College. "Most people use the word 'theory' to mean an idea or hunch that someone has, but in science the word 'theory' refers to the way that we interpret facts."
As food passes through the GI tract, it mixes with digestive juices, causing large molecules of food to break down into smaller molecules. The body then absorbs these smaller molecules through the walls of the small intestine into the bloodstream, which delivers them to the rest of the body.
A SUBSTANCE IS A PARTICULAR FORM OF MATTER WITH UNIFORM PROPERTIES IT CANNOT BE SEPARATED INTO SEPERATE PHYSICAL SEPERATION METHODS