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 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
Introduces simple machines, including screws, levers, wedges, and pulleys, describes how each makes everyday life easier, and provides activities demonstrating these machines in action.
"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."
Warning from publisher to reader: At HarperCollins, we are committed to customer satisfaction. Before proceeding with your purchase, please take the following questionnaire to determine your lik
A leading scholar offers fresh insight into one of the key moments in modern art historyDuring the fall of 1888, Vincent Van Gogh and Paul Gauguin lived and worked together in Provence. There in a yel
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.
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 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 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 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 energy, its different types, how its use has contributed to climate change, and the best ways to practice energy conservation, with instructions for activities that can be
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.
This volume contains the basics of what every scientist and engineer should know about complex analysis. A lively style combined with a simple, direct approach helps readers grasp the fundamentals, fr
In The Missing Element, author Debra Silverman describes human nature in a compassionate and succinct way. Everyone longs to be understood and the author offers ways for us to get to know ourselves in
