what is the digestive system?

The digestive system is an organ system that breaks down food in humans and other:

Why do humans need to break down food during digestion?

The digestive system is also known as an exchange system because it:

Which of the following is taken into the body by the digestive system?

Which substance is released by the digestive system to help with digestion?

What does bile help with during digestion?

Which statement best describes the digestive system?

True or False: The digestive system exchanges biological materials with it's environment.

Which keyword best completes this sentence?
The digestive system breaks food down into ______ that the body can use.