The transformation of high-grade metamorphic rocks into low-grade metamorphic rocks is termed metamorphism.

This is a 2017 topographic map of puerto rico in the united states, and i'm sorry that people there have suffered such a disaster. i want to ask, what do the yellow dots and areas represent on this graph? and the blue area and the little blue circle, and the little blue sign that looks like a signal tower, what do they stand for?

Amountain range known as the southern alps runs through the center of the south island. what type of mountains do you think the southern alps are? explain your answer. .

Many countries in africa have had difficulty creating democratic governments following their independence. all of the following issues have most likely contributed to this problem, except