"In graphic novel format, follows Peter Pea as he travels through and explains the workings of the human digestive system"--

In Science Comics: The Digestive System, visit the inside of your mouth, stomach, liver, intestines, and other organs that make up the gastrointestinal tract! Y

The digestive system is made up of the tongue, the esophagus, the stomach, the intestines, and other parts. But what does the digestive system do? And how do it

"In graphic novel format, follows Nelly Neuron as she travels through and explains the workings of the human nervous system"--

Why is it important tochew your food? Can you guess how long it takes for food to travel through your body? Could you possibly have twenty feet of small intesti