Which is one way that sinkholes can form? A. Rivers overflow during a storm and wash away nearby land.

B. Groundwater dissolves the limestone and other rocks in the ground.

C. Rainwater flows away from a depression in the ground.

D. Tornadoes touch down and destroy tress and brush

Answeroil-shale;

Exploration mission 2;

If a particular resource is not useful or needed then the price would be considerably low. once that resource is needed the price or value will raise depending on how useful or needed it is especially if the resource is low in quantity, the consumers would pay whatever they have to, to get that material.

Ithink the answer  is d. tourism.hope this ☺☺