1. Which of the following statements about sinkholes is incorrect?
Опрос
- a. They are more or less circular at the bottom and funnel shaped at the top
- b. Sinkholes are often covered by with soil mantle and appear as shallow water pools
- c. The term used to describe the collapse of sinks is doline
- d. Sinkholes and doline join together to form valley sinks or uvalas form