Final answer:
Karst topography can be identified from an airplane by looking for sinkholes, disappearing streams, and irregularly shaped hills or mountains.
Step-by-step explanation:
Karst topography is characterized by soluble rock, such as limestone, which is dissolved over time by groundwater. From an airplane, you can identify Karst topography by looking for specific surface features. These features include sinkholes, disappearing streams, and irregularly shaped hills or mountains. Sinkholes, which are depressions in the ground caused by the collapse of caves or underground passages, are a common feature of Karst landscapes. Disappearing streams are another indicator, as water may flow into the ground through sinkholes or cracks rather than on the surface.