Sally Salivates Seashells by the Seashore- Ocean Acidification and the Effect on Sea Shells
Rus Higley, Highline Community College, and Vanessa Hunt, Central Washington University
In this lesson we review "Acids and Bases" taught in a previous lesson and, through a scientific method, will look at the impact of an acid on different types of shells. Students will reinforce previous learning of scientific principles including acids/basis and will develop a real experiment using the scientific method.

Your Environmental Impact
Eric Baer and Mayra Hernandez, Highline Community College
The following homework assignments are designed to build understanding of personal water use, sewage, waste generation and disposal, pollution sources and impacts, and energy use and costs.

Ecosystem Services and Environmental Economics
Claus Svendsen, Skagit Valley College
In this exercise, students explore the value of ecosystem services of an ecological restoration project that they are proposing. They will be able to compare the ecosystem services value to the cost of the restoration project.

Gasping for Breath in Hood Canal: Exploring the Dissolved Oxygen Crisis
Ann J. Murkowski, North Seattle Community College
Students work collaboratively in groups to apply their understanding of photosynthesis, respiration, and nutrient cycling to develop hypotheses to explain an acute low oxygen event that occurred in Hood Canal.