You have learned that many pieces of writing have both explicit and implicit purposes. The explicit purpose is the reason the author gives for writing the piece. The implicit purpose is a secondary purpose that may not be stated in the text, but that the reader is supposed to understand from the supporting details. Find the implicit purpose in the example below.
The Bernheim Visitor Center is constructed from recycled cypress wood originally used for Heinz pickle vats. Although Bernheim had no part in the long-ago destruction of a cypress swamp to make the original vats, the staff decided they would pay back nature by creating a cypress-tupelo swamp at the southern end of Lake Nevin, one of several water features found in the park. This swamp is now a healthy wetland that provides a habitat for a variety of invertebrates as well as birds, such as the Great Blue Heron, and other wildlife.