Students learn about the differences between types of water (surface and ground), as well as the differences between streams, rivers and lakes. Then, they learn about dissolved organic matter (DOM), and the role it plays in identifying drinking water sources. Finally, students are introduced to conventional drinking water treatment processes.

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:

Describe the effects of abiotic factors on the composition of plant and animal communities in aquatic biomes
Compare and contrast the characteristics of the ocean zones
Summarize the characteristics of standing water and flowing water freshwater biomes

The slideshow offers students opportunities to observe, identify, and describe various characteristics of water bodies and compare near-ground-level and aerial views of each water body. The PLUM LANDING video offers student opportunities to observe and describe distinct characteristics of a lake while the PLUM LANDING video offers student opportunities to observe and describe distinct characteristics of a river. Teacher materials are provided.

Students explore various habitats (forest, desert, water, rainforest, and wetland), investigating how plants and animals survive within them, and compare and contrast the information that they gather.

Between 70 and 75% of the Earth's surface is covered with water and there exists still more water in the atmosphere and underground in aquifers. In this lesson, students learn about water bodies on the planet Earth and their various uses and qualities. They will learn about several ways that engineers are working to maintain and conserve water sources. They will also think about their role in water conservation.

By testing your local water quality, you will be able to compare your results with students around the world. Register your class, and follow the project instructions. Additional teacher resources, references, and Ask-an-Expert sources are availible

How would you define an ecosystem? Check out this educational resource to learn more about the living and nonliving parts of different ecosystems.

What is a lake? Discover the answer to this question when you explore this informative resource. This site provides information on how temperature and seasonal changes effects lakes, how lakes are formed, how lakes compare in numbers to each other and more.

This website from The Nobel Foundation gives the 1968 winner of the Nobel Prize in Literature -- Yasunari Kawabata -- is organized into the following sections: "Presentation Speech," "Biography," "Nobel Lecture," "Swedish Nobel Stamps," and "Other Resources."

Lesson plan with subsequent pages to use with the lesson. Images with landform word match up and additional work on earth modeling.

As part of the Smithsonian Art Museum's database of artists, this site provides in-depth biographical information on Robert S. Duncanson in addition to an extensive listing of his works as displayed at the museum.

Students read informational texts about the seven continents, and what makes each of them unique, while working to understand text features and develop skills in writing about informational texts.

The U.S. Geological Survey reports on the latest news affecting the earth today, as well as providing a wealth of data, reports, and information.

In this animated story [25:25] from the PBS KIDS series MOLLY OF DENALI, a power failure and a scary tale leave Molly and her friends terrified of gigantic ice worms. After seeing evidence of ice worms at the lake, Molly decides that they need to learn more. Are ice worms a real threat to Qyah, or has Grandpa Nat made them seem scarier than they really are? Leave it to Molly, Trini, and Tooey to find out the truth! Support materials are provided.