What particular rules of the game real and transfer knowledge or skills about the game chess?​

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods

3. dark matter

empty space could also be a simple vacuum