Dificilmente podriamos pesar un grano de arroz con una bascula. Sin embargo , es posible conocer su masa promedio ¿Como lo harias? ?Porque hablamos de masa promedio?

i will answer your question if you answer mine

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