Which type of ecosystem is characterized by wet lowlands with trees and slow-moving water?

The correct answer is swamps because they are ecosystems characterized by wet lowlands, often dominated by trees and slow-moving or stagnant water. Swamps typically occur in areas where water collects and remains for extended periods, allowing for a significant amount of vegetation, particularly woody plants and trees, to thrive. This hydrological condition creates a unique environment that supports diverse plant and animal life adapted to the wet conditions.

In contrast, marshes, while also wetland ecosystems, primarily contain herbaceous plants like grasses and reeds rather than trees, distinguishing them from swamps. Tundra is characterized by cold temperatures, limited vegetation primarily consisting of mosses and lichens, and is typically found in polar regions, while taiga, or boreal forests, features coniferous trees in cooler climates. These key differences underline the specific characteristics that define swamps as the correct answer.