Overview of the musculosketletal system, including how bones and muscles interact and how breakthroughs in technology are making bionic body parts a reality. Examines the structure and functions of the skeletal system. Describe the types of muscles in the human body and how they contract.
The student will investigate acids and bases in the world about them. Explains how substances are placed in categories according to their characteristics. Identifies properties of acids and bases, and describes their harmful effects. Describes methods of identifying acids and bases, and identifies common ones.
A fungus that controls flies? A wasp that tames cockroaches? Meet ten creatures that can take over the bodies and brains of other organisms--and turn them into senseless slaves.
A biography of Sir Ernest Shackleton, the daring, charismatic Antarctic explorer who fell short of his goal of crossing Antarctica, but accomplished a far greater feat by bringing every member of his crew back alive.
Takes readers on a walk in the tundra, showing examples of how the animals and plants of the tundra are connected and dependent on each other and the tundra's soil and climate.
