The quiet nature of trees hides the fact that trees are always working for us and for Earth. Trees give us goods to meet our basic needs. Trees are home to animals, insects, and birds. But their biggest and most important job is playing a role in making Earth and our environment healthy. Learn some of the ways trees help, why they are in danger, and what you can do to help protect them now. Book features: Table of Contents; Glossary; For More Information including books and web sites; Index; photos and captions; charts and graphs; source notes.
All plants need sun, water, air, and food to grow. Plants are anchored to the ground by their roots, which take in nutrients from the soil. Stems and stalks hold up plants and give them shape, and also hold the plumbing system of the plant. Leaves are the place where food is made for the plant. Many plants make crops for us to eat.
Have you thought about where your food comes from? Do you know the difference between organic and nonorganic foods, and is organic always a more healthful choice? Some farmers have opened their farms to the local community to help grow and pick crops. In this book, you'll read why community-supported agriculture is growing fast and how the choices you make at the grocery store can make a big difference in Earth's health as well as your own. Book features: Table of Contents; Glossary; For More Information including books and web sites; Index; photos and captions; charts and graphs; source notes.
With an emphasis on how important light is to our Earth, this title explains how light effects photosynthesis, how light travels, the different properties of light and how both animals and people depend on it. Whether it's ultraviolet light that help bees pollinate flowers to solar panels that use the Sun's light to heat our homes, it's all addressed in this beautifully illustrated book.
This title teaches students that everything is made of matter, and that physical changes create different forms or states of matter. Gives examples of these different states in easy to understand text and introduces students to the Law of Conservation of Mass.
STEM technology is a very important topic in today's world and this book will allow students to learn more about atoms, molecules, how different temperatures and situations affect them. It also introduces them to the periodic talbe of elements and how even today more elements are being discovered and the periodic table continues to grow
This title introuduces students to the basic concept of sounds. How sounds can be heard but not seen. How sound is a form of energy that is transmitted through sound waves which travel through your eardrum to be heard. How sound travels through air and at what rate of speed. Useful examples are given throughout to help students understand the concept.