Which is the best evidence that continental plates continue to move? A. Reciting weather patterns

B. Predictable cycles of solar events

C. Glacial movement and calving

D. Volcanic activity along the ring of fire

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?

Countries that have a traditional economy often develop at a slower pace than countries with a free market economy. true or false

According to speculation and study, what will happen to the global birth rate in about 40 years? (1 point)