This animation illustrates how the weak, plastic flows allowing the rigid crust to "float" atop pushed apart by convection currents in the mantle.

Imagine that the ice at the north pole is melting much more quickly than anywhere else on earth. which of these questions is the best example of one of the three questions geographers might ask in this situation? a. when is the biggest fishing season near the north pole? b. why is ice melting faster at the north pole than anywhere else? c. how many species of whales inhabit the waters near the north pole? d. how do human populations survive in cold areas near the north pole?

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

Which season occurs in the northern hemisphere when the sun is at its lowest point in the sky