Turn now to chemical energy, the potential energy resulting from the position of atoms within molecules. After an overview of photosynthesis (perhaps the universe’s most amazing form of energy conversion), learn how combustion transforms biofuels into light and heat, and how energy density affects the transportation of biofuels like petroleum.

After the events of "Hunting the Elements", venture on a worldwide quest to find the key molecules and chemical reactions that have paved the way for human civilization, life, the universe, and everything.

Explains the cyclical relationship between photosynthesis in plants and respiration in animals.

"Observing plants can be tricky. Plants often look alike at first glance, and they are often found in places where they are not native. That's why citizen scientists are so important! Learning to observe and record what one sees is a great skill for young readers to learn. In this book, readers are encouraged to investigate the plants in their area, identify them, uncover how their seeds are dispersed, and more! From the main parts of plants to food...

Trees are a perennially inspiring subject for artists. Think of their beautiful multicolored leaves in the fall, or the way the snow settles on their branches in the winter. Start by learning how to identify trees and leaves, their benefit and life stages, the oldest trees, famous forests, and other fascinating aspects and phases of growth. Then, use this inspiration paired with charming prompts to draw the diverse beauty of these endlessly captivating...

Information on science, like geology, genetics, water, biology, and other science subjects.

"Get ready for the AP Biology exam with all the review and practice you need. Detailed review and practice covering all relevant topics for the AP Biology exam. Two full-length practice tests that reflect the actual exam in length, question types, and degree of difficulty. Review of key illustrative examples that help clarify tested topics and serve as examples to use when answering the free-response questions. Descriptions of the latest long and...

A young girl named Beatrice imagines herself as a tree and envisions how she would interact with her natural surroundings and change throughout the seasons. Includes factual information on trees and photosynthesis.

The grassland ecosystem - steppe, prairie, savanna, and rangeland - is found on every continent except Antarctica. Estimated to cover almost one-third of the land area of the planet, grasses developed unusual adaptations related to the location of their growth tissue and their specific mechanism of photosynthesis. Learn how grasses play a major role in the development of human society.