Answer:
I choose the ecosystem Wetland. They include trees such as swamp mahogany, swamp paperbark and swamp she-oak. Animals in this area include, Beavers, Muskrat's, and Crane's.
Some adaptations that help the Tree's deal with low oxygen and changing water levels are elongated stems, shallow roots, aerenchyma and adventitious roots.
Beavers have several adaptations that help them in the water, aiding in survival. They have clear eyelids, which protect their eyes and help them see underwater. Valves in a beaver's nostrils and ears can close, keeping water out.
Muskrats have long been recognized by scientists for their role in maintaining wetland ecosystems. By grazing on cattails and other emergent grasses and rushes they help to open the surface of a marsh, keeping it from becoming choked with vegetation.
The whooping crane has many adaptations for its marshy, water filled habitat. The neck of the whooping crane is very long so it can get food from the bottom of a lake, stream, or other body of water without getting its body feathers wet.
Explanation:
Sorry this is so long! Hope this helps though!