How is my brain like a supercomputer?

Text in question-and-answer format helps readers understand how the human body works, including how DNA makes a person special, how cells work in the body, how a heart pumps blood, and more. "Why do I have a belly button? What happens to the food I eat? Why am I different from everyone else on Earth? All children want to understand how their body works, and this lively illustrated book explains it all, from what DNA is to how their heart pumps blood"--