Book excerpt: Barron's Let's Review Regents: Living Environment gives students the step-by-step review and practice they need to prepare for the Regents exam. This updated edition is an ideal companion to high school textbooks and covers all Biology topics prescribed by the New York State Board of Regents. This edition includes: One recent Regents exam and question set with explanations of answers and wrong choices Teachers’ guidelines for developing New York State standards-based learning units. Two comprehensive study units that cover the following material: Unit One explains the process of scientific inquiry, including the understanding of natural phenomena and laboratory testing in biology Unit Two focuses on specific biological concepts, including cell function and structure, the chemistry of living organisms, genetic continuity, the interdependence of living things, the human impact on ecosystems, and several other pertinent topics Looking for additional review? Check out Barron’s Regents Living Environment Power Pack two-volume set, which includes Regents Exams and Answers: Living Environment in addition to Let's Review Regents: Living Environment.