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

This comprehensive study guide covers the main terms and concepts needed for a unit on the stages of life beginning at fertilization.

A free CK-12 account is required to view all materials.

This Colonial Hall site gives a great outlined biographical site of former U.S. president, John Adams.

This video segment from the Science and Technology Chat series focuses on dolphin pregnancy, birth, and care of the young, and features Atlantic bottlenose dolphins living in captivity at the Mirage Resort Dolphin Habitat. [2:38]

This video segment from the Science and Technology Chat series focuses on dolphin pregnancy, birth, and care of the young, and features Atlantic bottlenose dolphins living in captivity at the Mirage Resort Dolphin Habitat.

A detailed timeline on the early history of the religion from the time of Julius Caesar (44 B.C.E.) to 327 C.E. and the death of Constantine.

Watching plants grow is like watching paint dry: It happens so slowly that the changes are imperceptible from one moment to the next -- and yet the end results are dramatic. This video segment shows just how amazing plant development can be by depicting various phases of the process using time-lapse photography. Footage from NOVA: "The Shape of Things."

Explore themes of death and birth in this autobiographical poem by Marie Howe. In this video segment, Howe reads her poem "The Gate," written after her brother's death.

This collection of six images captures the magnificence of human development -- the transformation from baby to woman.

Through scientific research, this video from The Human Spark illustrates how a child’s views of what is right and wrong can be shaped by others.

All animals develop and grow over time. The animals in this video segment, however, undergo very dramatic changes on their way to adulthood -- a developmental process known as metamorphosis.

In this interactive activity from NOVA Online, learn about a type of exploding star - a Type Ia supernova - that is so bright that astronomers can measure the distance to the galaxy in which it resides, and even learn which elements make up the star.

This video segment adapted from NOVA explains the origin of the elements and how scientists use unique element profiles to identify supernova types. Includes background reading and discussion questions. [1:55]

Engaging youth in discussions about family planning is difficult for a variety of reasons, not the least of which is the general discomfort adolescents have talking with adults about sex. Sometimes it can be easier to talk about uncomfortable issues when the spotlight is turned on someone else's situation. This lesson plan offers that opportunity by embedding health information in a social studies lesson. By focusing on clips from the film Motherland, which features patients at a public maternity hospital in the Philippines, students can take a step back from the topic and learn about it with some critical distance. The lesson provides students with a way to examine policy and practice and learn about birth control methods, without getting mired in controversial debate, personal religious beliefs or their own embarrassment.

Learn firsthand from a young Antarctic researcher about a long-term study on the reproductive history of Weddell seals in this video segment adapted from WomenInAntarctica.com. [3:33]

This video segment adapted from NOVA reveals how junk DNA helped solve an evolutionary mystery: Why do certain species of fruit flies have wing spots while others don't?

Looking at the history of the community of Mirror, Alberta, shows how this part of Western Canada gained population.