The map shows the physical and manmade elements of the Merritt Island National Wildlife Refuge including multiple picnic areas, visitor centers, roads, as well as names of islands and bodies of water. The Merritt Island National Wildlife Refuge is a series of barrier islands and bodies of water from the Atlantic Ocean to the inland coast of Florida.
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Based on this map, what are the major ecological threats to plants and animals within the Merritt Island National Wildlife Refuge?

The presence of barrier islands
Buildings placed in nearby towns
Changing weather and climate patterns
The access humans have to the park