Many animals live in water, but only some can be defined as fish. Twenty-eight thousand species of fish exist, each with different characteristics. Readers from grades one through four will learn that
There are over 6 muscles in the human body that we can strengthen, stretch, flex, or simply leave alone. Whether we use them consciously or not, muscles work to protect our bones and keep our blood fl
Even though we can’t change the weather ourselves, we can understand the factors that account for changing conditions. Weather fronts are responsible for a host of meteorological phenomena, and learni
Single or multicolored, smooth or multifaceted, gems of all kinds captivate people of all ages. This vibrant volume will teach the budding geology buff how a single mineral can form many varieties of
