Write a question you would see in a school textbook.
Which action most often causes sinkholes to form on the surface of Earth?
Skriv en fråga du skulle se i en lärobok.
Write a question you should see in a textbook.
Vilken åtgärd får oftast slukhål att bildas på Jordens yta?
What action usually causes sinkholes to form on Earth's surface?