Keywords are what we use to search databases, but rarely does a single keyword produce perfect or complete results. Resources may not be described how you expect, and this is why approaching a search with multiple terms will produce the best outcome.
When formulating keywords, focus on:
Research Question: What is the history of the Everglades and how are they a unique ecosystem?
Keywords: Everglades, Florida, swamp, marsh, wetlands, mangroves, ecosystem, flood control, Lake Okeechobee, Florida Bay, cypress, Miami, manatees, alligators, sawgrass, Kissimmee River, biodiversity, coastal prairie, aquifer, environmental restoration
After running a search, users can filter the returned results by using the facets on the right hand side of the window.