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some places such as caves and sinkholes have lower elevations than surrounding areas infer how a sink might be shown on a topographic map

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znk

Answer:

By closed contours with hachures

Explanation:

A sinkhole is a depression in the ground that forms when water erodes an underlying rock layer.

Sinkholes are denoted by closed contours with tick marks (hachures) that point towards lower ground.

The topographical map below shows the difference between the contours of a hill and those of a sinkhole.

Ver imagen znk

Sinkholes and caves are denoted on a topographic map with; close contours that have inward facing hatchers on the contour lines

  • In geography, sinkholes are cavities located under the ground that form when water erodes an underlying rock layer. In simple terms it is formed when the land surface above collapses or when it sinks into the cavities or when surface material is carried downward into the voids

  • There are two major types of sinkholes. The first type is that which forms when the roof of a cave collapses and makes the underground cavern the while the second type is formed when water makes rock under the soil to dissolve.

  • Now, on a topographic map, sinkholes are denoted with close contours that have inward facing hatchers on the contour lines.

Read more about sinkholes and caves at; https://brainly.com/question/23396434