How far apart would two index contours be on a map with a contour interval of 5 meters?

Identify the type of chemical reaction involved in each action.

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

The two types of plains are coastal plains and lowland plains