What is the first step of seafloor spreading? a crack forms in oceanic crust. molten rock rises up through oceanic crust. molten rock solidifies at the center of the ridge. new material pushes older rock away from the ridge.

Brainliest ! which would require more force to move or slow down between a bowling ball and a soccer ball? explain why?

What are the two functions of the respiratory system

3. draw a topographic map that displays the following features: (4 points each) a. the contour interval is 20 meters. b. the point of lowest elevation is 960 meters. c. the point of highest elevation is 990meters. d. there is at least one sinkhole or depression, at any elevation. e. there is at least one steep slope and one gentle slope.