Which statement best describes the theory of plate tectonics? a) plates sometimes move closer to one another. b) sections of earth that shift are part of earth's asthenosphere. c) sections of earth's continents are in slow, constant movement. d) parts of the ocean floor move as they are carried by rift valleys.

Which sequence of transformations on preimage ∆abc will not produce the image ∆a'b'c'? a. reflection across the line y = x b. rotation 180° clockwise about the origin followed by a reflection across the line y = -x c. reflection across the x-axis followed by a reflection across the y-axis d. reflection across the line y = -x followed by a rotation 180° counterclockwise about the origin e. reflection across the y-axis followed by a rotation 90° clockwise about the origin

Southeast asia relies on its many because of the volcanic, mountainous terrain. a. highways c. rivers b. airports d. lakes

How does sea floor spreading relate to supercontinents?