Why is a political map more likely to change than a physical map

What is the difference between external & internal migration

The physical processes that create most of earth's physical features, including mountains, are known as

17. the soil erosion pictured here is the result of what? a. harvesting renewable resources at a rate greater than the sustainable yield b. a mudslide caused by excessive rains c. harvesting renewable resources at a rate lower than the sustainable yield d. the transition between geologic eras and eons