What is the maximum number of times that a quadratic function can intersect the x-axis?

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics? he proposed that plates carry parts of the seafloor. he theorized that pieces of earth move for a limited time. he suggested that the asthenosphere is broken into segments. he observed seafloor cracks similar to existing cracks in the continents.

Eastern europe’s population growth can be attributed to these factors. select all that apply migration

How did the europeans design the national borders of africa? why?