Biology 2e is designed to cover the scope and sequence requirements of a typical two-semester biology course for science majors. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Biology includes rich features that engage students in scientific inquiry, highlight careers in the biological sciences, and offer everyday applications. The book also includes various types of practice and homework questions that help students understand—and apply—key concepts. The 2nd edition has been revised to incorporate clearer, more current, and more dynamic explanations, while maintaining the same organization as the first edition. Art and illustrations have been substantially improved, and the textbook features additional assessments and related resources.

By the end of this section, you will be able to do the following:

Explain fetal development during the three trimesters of gestation
Describe labor and delivery
Compare the efficacy and duration of various types of contraception
Discuss causes of infertility and the therapeutic options available

Describes how the embryo forms specialized cells and organs.

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Covers major events in the growth and development of the fetus.

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This video, adapted from 'Contaminated Without Consent,' explains how the Environmental Working Group, an advocacy organization working to protect children from toxic chemicals in the environment, tested 10 samples of umbilical cord blood, and details their findings. In the samples, the group found more than 200 chemicals, some of which were associated with cancer and other chronic diseases. Dr. Ted Schettler, with Physicians for Social Responsibility, explains that many chemicals have ended up in unexpected places (like breast milk, cord blood, and wildlife) and that action must be taken to protect the population from exposure. Includes background essay and discussion questions. [1:31]

Psychology is designed to meet scope and sequence requirements for the single-semester introduction to psychology course. The book offers a comprehensive treatment of core concepts, grounded in both classic studies and current and emerging research. The text also includes coverage of the DSM-5 in examinations of psychological disorders. Psychology incorporates discussions that reflect the diversity within the discipline, as well as the diversity of cultures and communities across the globe.Senior Contributing AuthorsRose M. Spielman, Formerly of Quinnipiac UniversityContributing AuthorsKathryn Dumper, Bainbridge State CollegeWilliam Jenkins, Mercer UniversityArlene Lacombe, Saint Joseph's UniversityMarilyn Lovett, Livingstone CollegeMarion Perlmutter, University of Michigan

By the end of this section, you will be able to:

Describe the stages of prenatal development and recognize the importance of prenatal care
Discuss physical, cognitive, and emotional development that occurs from infancy through childhood
Discuss physical, cognitive, and emotional development that occurs during adolescence
Discuss physical, cognitive, and emotional development that occurs in adulthood

The basics of how humans reproduce is covered here. Learn about female and male reproductive organs, mating, fertilization, how a fetus develops, and birth.