WILLL MARK BRAINLIEST PLEASE HURRY IM RUNNING OUT OF TIME According to the theory proposed by Harry Hess, what causes continents to move?

continental drift
magnetic polarity
seafloor spreading
deep-ocean trenches

Write a short paragraph of about 150-300 words. explain how the physical environment can limit human activities.

In russia which of these challenges affects the transportation of both petroleum products and other goods?

Afootpath is to be constructed in a park in the shape of a parallelogram. when a coordinate plane is laid over a map of the park, the vertices of the footpath are (-4,2) (8,2) (11,7) and (-1,7). what is the perimeter of this path