Final answer:
Three features resulting from the water table being exposed at the ground surface are wetlands, streams, and gullies, each of which plays a key role in local ecosystems and water resource management.
Step-by-step explanation:
Three common features that result from the water table being exposed at the ground surface are wetlands, streams, and gullies. Wetlands are areas where the soil is saturated with water, either permanently or periodically, supporting hydrophytic vegetation and hydric soils. Streams are where the water table intersects with the Earth's surface, providing a natural watercourse for water to flow, often influenced by local topography. Gullies are erosional features formed by the flow of water, which can occur when groundwater breaks out from the subsurface, especially on steeper slopes.
Understanding these features is crucial because they play significant roles in local ecosystems, affecting biodiversity and providing essential resources for various forms of life. Moreover, knowledge of the water table and related features helps in the management of water resources and in anticipating the impact of human activities such as development on local hydrology.