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Bundle up for a fact-finding mission to the Arctic. Readers will learn about Arctic plants and animals, and how they depend on each other for survival in the coldest ecosystem on Earth. -
SIN DESCRIPCION -
Some of the most important contributors to the food chain are those creatures that help break things down: decomposers. If not for these birds, bugs, and worms organic matter couldn't be recycled back into nature. Readers will discover the different kinds of decomposers, how they do their job, and why it is so important. This fascinating book includes graphic organizers and annotated illustrations to better explain the food chain. -
Introduces the fundamentals of energy, including its different forms, how it is stored, and how people use it. -
Provides an introduction to light, describes some of its properties and offers experiments to do with it. -
Describes the key aspects of magnetism, discussing magnetic fields, electromagnetism, and common uses of magnets. -
Explains the need for and the benefits of laws, including information on history, the U.S. Constitution, and how national laws are made
