Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor. Eventually, the crust cracks. Hope this helps!
The answer is.....
C he was offered a lot of money by the British government to defend them.
A a side effect of a good service generating benefits or costs to someone who doesn't decide how much to produce or consume
