dado que sabemos que china produce más de 90% de los elementos de tierras raras cree que Estados Unidos debería seguir produciendo todos los productos como teléfonos inteligentes y automóviles y vehículos híbridos que necesitan esos elementos por qué o por qué no

Which volcanic eruption caused the most deaths

The mantle is made up of which structural zones?

Astate's representation in the u.s. senate is based on a) equal representation. b) the state's population. c) the state's electoral votes. d) the size of their major cities.this independent regulatory agency was created in 1974 to oversee and regulate the financing of political campaigns in the united states. a) warren cthis independent regulatory agency was created in 1974 to oversee and regulate the financing of political campaigns in the united states. a) warren commission (wc) b) federal election commission (fec) c) equal opportunity commission (eoc) d) securities and exchange commission (sec)