HELP HELP HELP HEL "Roughly 450 kilometers north of San Francisco, California, is the Arcata Marsh and Wildlife Sanctuary. although it couldn't look more different from the wastewater treatment plant seen here, it too was built to treat a communities water supply."

Use the Internet or other resources to research the Arcata Marsh.

1. Write a brief report on how and why the marsh was built.

2. Also describe the benefits it provides for area residence.