"Are you in control of your body? Maybe, maybe not. Read this book to learn how your body gets the messages it needs to perform even simple functions."
Have objects from space ever hit Earth? Yes! Every day small meteoroids crash into the atmosphere. Some burn up, but some hit the ground. Space junk also falls to Earth. Comets and asteroids struck Ea
Describes the symbiotic relationships that occurs between such animals as crocodiles and Egyptian plovers and termites and protozoa, and discusses types of symbiosis and what each kind of animal gains
Describes the symbiotic relationships that occurs between such animals as crocodiles and Egyptian plovers and termites and protozoa, and discusses types of symbiosis and what each kind of animal gains
Presents an introduction to composting, discussing how decomposition works, how to set up and maintain a worm farm, and how compost improves the soil and helps plants grow.
Presents an introduction to waste disposal, describing what happens when paper, plastics, glass, and electronic products are recycled and offers experiments and activities that can be done to demonstr
Presents an introduction to waste disposal, describing what happens when paper, plastics, glass, and electronic products are recycled and offers experiments and activities that can be done to demonstr
Describes the labor and resources required for creating a pizza pie, from the harvesting of tomatoes and grain to the fermentation of cheese, and explains where selected pizza toppings originate.
Examines the three states of matter--solid, liquid, and gas--and discusses how matter can change its state, mixtures, and substances such as tar whose exact nature is hard to define.
Introduces gravity and explains how it works, the effects it has on weight, and how the Earth's gravity keeps the Moon in its orbit and everything on the planet in its place.
Presents an introduction to water conservation, describing what happens during the water cycle and what steps need to be taken to save water, and offers experiments and activities that can be done to
Presents an introduction to water conservation, describing what happens during the water cycle and what steps need to be taken to save water, and offers experiments and activities that can be done to
Introduces simple machines, including screws, levers, wedges, and pulleys, describes how each makes everyday life easier, and provides activities demonstrating these machines in action.
Introduces electricity; describes how it is made, transferred from the power plant through power lines into the home, and used; and explains how batteries work.
Describes life in the wetland regions of the world, including how plants and animals survive, how people adapt to living in the regions, and what factors currently threaten wetlands.
Describes life in the grassland regions of the world, including how plants and animals survive, how people adapt to living in the regions, and what factors currently threaten grassland ecosystems.
Introduces readers to insects and the concept of classes of animals. Simple text describes the common features and behaviors of insects as well as offering many examples of creatures in this group.
Presents an introduction to weather, discussing the impact of the sun, air movement, bodies of water, and the Earth's rotation on weather systems, the causes of precipitation, and how the weather is f
Presents an introduction to weather, discussing the impact of the sun, air movement, bodies of water, and the Earth's rotation on weather systems, the causes of precipitation, and how the weather is f
Hot air balloons are huge and colorful. They're lots of fun to watch. But how do they fly? And how do people control where the hot air balloon goes? Read this book to find out!
What do an elephant, a mouse, and a dolphin have in common? They’re all mammals! But do you know what makes a mammal a mammal? Read this book to find out! Learn all about birds, insects, reptiles, and
What do a penguin, a pigeon, and a peacock have in common? They’re all birds! But do you know what makes a bird a bird? Read this book to find out! Learn all about reptiles, insects, mammals, and othe
What do a bee, a butterfly, and an ant have in common? They’re all insects! But do you know what makes an insect an insect? Read this book to find out! Learn all about reptiles, fish, mammals, and oth
