Compare and contrast the four types of crystals

Drastic boundary changes can occur for all of the following reasons except for a. a shift in the way a river flows b. the collapse of a government system c. a conflict between two neighboring groups d. one country's decision to sell land to another country select the best answer from the choices provide

Soil is made of air water organic material minerals weathered rock

One reason that madrid became the capital of spain is because of its