How many people know that Charles Darwin’s grandfather first pondered evolutionary theory long before his grandson did? Erasmus Darwin (1731-1802) was a British physician and poet who first proposed the notion that life had changed over time. His grandson, Charles, then went forward upon the British exploratory vessel, the H.M.S. Beagle, to study adaptation, the diversity of species, and natural selection. Surprisingly, this interesting history and more can be found in a biology textbook. Whether acquired by purchase or by textbook rental, it is one of the most valuable learning and references tools to have.

For any biology class, a biology textbook is usually a course requirement, and it is most often found in a bookstore or can be obtained through an online bookseller and textbook rental operation. As a necessity, it serves as an important supplemental guide to match the particulars of an instructor’s syllabus and to follow the course outline. As an informational reference resource, it is a clearly organized body of work brimming with explanations, examples, photos, definitions, diagrams, theories, and history, with structured chapters, helpful unit reviews, a vital glossary of terms, and a cross-referenced index. As an academic learning and study tool, it an essential manuscript from which to take notes, study, prepare for quizzes and tests, and, ultimately, to improve grades.

Tomorrow’s test, for example, may be about the hierarchical Latin classification system devised by Linnaeus to identify the kingdoms of life, which are monera, protista, fungi, plantae, and animalia. The end-of-the week quiz may be about cell structure, division, metabolism, transport, and reproduction. The next quiz may ask all about plant photosynthesis, or it may have questions related to the human body and its many systems: integumentary, circulatory, lymphatic and immune, digestive, reproductive, respiratory, nervous, endocrine, excretory, muscular, and skeletal systems. The final exam may include an essay question that asks for a detailed explanation of Darwin’s Theory of Evolution.

To study and prepare for tests and quizzes, using a biology textbook can only enhance the learning experience and improve grades. Brilliant photos of different plant and animal species can serve to aid identification and memorization. Diagrams and charts help with understanding concepts and principles, such as Mendel’s genetics work with peas to explain trait inheritance. Often organized in specific study units, the manuscript’s logical structure is conducive to simplified learning of complex material, and knowing that the author or authors are qualified, educated biology professionals who are authorities in their field provides the reader with great reassurance as to the credibility of the work. Textbook rental is a convenient method of acquiring course materials, and those who buy textbooks allow for a permanent addition to a personal library for a lifetime of at-hand reference. Either way, having a biology textbook can determine, as Charles Darwin put it, the "survival of the fittest" when grades are at stake.