Video solving for the domain and range of a specific function defined verbally. Equation for function is found before defining the domain and range. [3:36]

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

Sal introduces the concept of "range" of a function and gives examples for functions and their ranges. [6:38]

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

These images from the Smithsonian Institution depict Nancy Knowlton's work with snapping shrimp in Panama. Knowlton found that the closing of the isthmus -- dividing the Pacific Ocean from the Caribbean -- resulted in new species of shrimp.

Learners examine a table of domain and range for basic functions. The tutorial includes the domain and range of algebraic, trigonometric, inverse trigonometric, hyperbolic, and logarithmic functions.

This video segment from NOVA: "Animal Imposters" shows the lightning-fast strike of the anglerfish. [1:30]

See the many birds that spend their summer in the Arctic in this video segment from Nature. [2:52]

This video segment from Wild TV takes a closer look at backyard bugs, their habitat and characteristics. [2:48]

In this video segment from Nature, researchers study pandas in an effort to halt their decline in population. [5:37]

In this video segment from Nature, learn about the problems bears are creating on ranch land surrounding Yellowstone National Park. [3:01]

This video segment from NOVA: "The Mystery of Animal Pathfinders" explores honeybee communication and navigation. [4:45]

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:

Discuss the need for a comprehensive classification system
List the different levels of the taxonomic classification system
Describe how systematics and taxonomy relate to phylogeny
Discuss a phylogenetic tree's components and purpose

There are almost as many types of bird beaks as there are types of food that birds like to eat. This collection of images shows a wide range of beaks and the types of foods handled by each.

Students are asked to explain the characteristics of the bird in flight and how adaptations would allow the bird to fly a particular way. [0:32]

See how a place-based high school curriculum project promotes STEM learning through local ethnography and conservation projects. This video segment showcases one of 11 CREST projects taking place in rural, coastal Maine communities. [5:40]

In this video segment adapted from NOVA, find out how cars made of a material stronger than steel and half the weight can help combat climate change. [5:01]

In this interactive activity from NOVA, discover how centripetal force can affect you when riding in a car or flying at high speeds in a fighter jet.

Carolyne DeGrammont of the Cedar Lane Stables in Queens, NY talks about why she enjoys horses in this video segment from Wild TV. [0:51]