Engelska

Higher Human Biology [Bok / Häftad]

Biology Standard Level [Bok / Häftad]

A colorful look at 3.5 billion years of stromatolites, peculiar structures produced by primitive life forms that lived over vast spans of geologic time. At once diverse, attractive, and sometimes puzzling, fossilized stromatolites are found worldwide in sedimentary rocks-often presenting striking patterns-where they grew in ancient bodies of water that covered parts of the earth billions of years before the dinosaurs. This reference presents a basic, nontechnical account, along with 636 beautiful images of these most ancient of Earthly collectibles. Stromatolites, and the cyanobacteria that produced most of them, were responsible not only for the fossils themselves, but also, more importantly, for the introduction of free oxygen into the planet's atmosphere. Covering a diverse variety of stromatolites and the geologic objects that can resemble them, this book is a delight for stromatophiles as well as those curious about the early Earth.

It is easy to get mesmerized with freshwater aquariums. Creating an underwater ecosystem is not only a rewarding experience but can also bring much peace and relaxation to your life. They seem easy to care for at the start, but there is more than meets the eye when keeping your freshwater aquarium and pets healthy. This book will guide you through every process of starting an aquarium, maintaining healthy fish and plants, and tips on how to battle common problems. Perfect for beginner hobbyists and longtime aquarium enthusiasts, An Introduction to Freshwater Aquariums makes it easier than ever to set up a beautiful aquarium that family and friends alike can enjoy, not to mention, most importantly, yourself.<br/><br/>Included in this book are full-color photographs that will supply readers with:<br/><br/>- Step-by-step instructions on setting up your aquarium<br/><br/>- Understanding the chemistry and biology involved in keeping a healthy aquarium<br/><br/>- Anatomy and diseases<br/><br/>- Including 70+ of the most popular species of fish, invertebrates and plants, and much more.

The Skillful Forager [Bok / Häftad]