Scabs Are So Gross!

Human blood is simply amazing. From carrying oxygen to the body’s organs to helping us battle against disease, blood has many jobs. However, one of them can be pretty gross—scabs! Whether gotten from a skinned knee or more serious injury, scabs are a constant part of life, especially in childhood. In this book, readers learn how and why scabs form—and why we should let them heal on their own. A diagram aids understanding of the essential body systems information and full—color photographs c...