Author Susan Dudley Gold delves into the functions of the digestive and excretory systems. She explains why these systems are discussed together, how they work, and ways to keep healthy. Fascinating tidbits about these systems add an interesting twist.http://www.enslow.com/books/Learning_About_the_Digestive_and_Excretory_Systems/4010
The endocrine system is essential to human life. It enables a person to grow, respond to change and stress, and helps turn food into energy. The reproductive system has one crucial task: that of making the next generation of people. Learn how these two remarkable systems work together to ensure survival of the human race.http://www.enslow.com/books/Learning_About_the_Endocrine_and_Reproductive_Systems/4011
How do your eardrums work? Can odor molecules pass through a solid the same way they pass through air? How does your sense of smell affect how something tastes? Learn the answers to these questions and more with the fun life science experiments in this book. Young scientists will explore the five human senses. Learn about the scientific method using the many experiments in this book. There are also ideas for science fair projects.
The circulatory system runs through the body carrying oxygen and nutrients to our cells and removes waste. It’s driven by the never-resting heart, which pumps blood through more than 60,000 miles of arteries and veins.http://www.enslow.com/books/Learning_About_the_Circulatory_and_Lymphatic_Systems/4009
What does the heart do? Why does it beat? What is a pulse? Up until the 17th century, most believed that blood sloshed around the body like ocean tides. Then the English physician William Harvey showed the world that the heart is actually a pump, and that blood circulates throughout the body. This marked one of the greatest advances in the study of medicine. http://www.enslow.com/books/William_Harvey/1494
Chien-shiung Wu 1912-1997 In 1956 Chien-Shung Wu devised an experiment by which one of the basic laws of physics—so-called parity conservation—was overturned, an achievement that helped win a Nobel Prize for two of her colleagues and revolutionized the study of particle physics.