a mid ocean ridge is located at the boundary of two tectonic plates; which statement would best describe the age of the rock found at an oceanic ridge?; which statements regarding tectonic motion are correct?; the food webs below model relationships among the organisms in two ecosystems.; based on the map volcanic activity would most likely be found at; the map shows some of earth's plate tectonic boundaries; plate tectonics can lead to new ecosystems near the ocean floor; what is the mechanism that causes the tectonic plates to actually move?