What is called paristha

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.

How long does it take for saturn to orbit the sun?

In the diagram below, ab and bc are tangent to o. what is the measure of