Final answer:
The introduced plant species that were planted in Florida's wet Everglades include the Brazilian pepper tree and the Australian paperbark tree. These plants can impact the natural plants by creating dense canopies and altering fire regimes, leading to overgrowth and shading out of native species.
Step-by-step explanation:
The introduced plant species that were planted on Florida's wet Everglades and impacted the natural plants are the Brazilian pepper tree and the Australian paperbark tree. The Brazilian pepper tree produces a dense canopy, creating too much shade for native plant species to thrive. The Australian paperbark tree catches fire easily and produces hotter fires than the grasses and sedges it replaces. These changes in the ecosystem can result in the overgrowth and shading out of native species, affecting the overall biodiversity of the Everglades.