Chris Hayhurst

Without oxygen, no part of the body-not the brain, the heart, the legs, the arms, or anything else-would work. The lungs are the most important component of the respiratory system, the process by which oxygen is supplied to all living cells. Readers will

Introduces the sport of snowboarding, with advice for beginners on equipment, techniques, competition, and safety.

A discussion of the anatomy and physiology of the human brain and spinal cord, the structure of the nervous system, and how we think, feel, and move.

Describes the sport of bicycle stunt riding, how to purchase equipment, practice stunts, ride safely, and enter competitions.

Discusses the anatomy and functioning of the lungs, how we breathe, and how oxygen is brought to the cells of the body.

Describes the history, equipment, techniques, and safety measures of wakeboarding, which is a combination of waterskiing and snowboarding.

Profiles the characteristics of and qualifications needed for twelve jobs that involve working with animals.

Everyone knows that the brain is responsible for our smarts and the spinal cord holds us up, but students may be surprised to learn how much more these powerhouses are responsible for. Together they control the nervous system. Without them, we would not b

"A man of renowned courage, Sitting Bull was a great leader. What path led him to be such a brave chief? As a young man, Sitting Bull was a natural leader and great hunter. He was named leader of the Lakota nation and a holy man. General Custer and his troops were no match for Sitting Bull and his tribe when Custer attacked. Until his untimely death at Standing Rock Reservation, Sitting Bull was an important and influential figure in American history....