What would happen if we didn't have plane joints? (Gliding joints)

Why is earth's outer core hotter than earth’s oceanic crust? earth’s oceanic crust is denser than earth’s outer core is. earth’s oceanic crust has lava flowing from the mantle. earth’s outer core has a composition of solid iron and nickel. earth’s outer core is deeper within earth than oceanic crust is.

Idon’t understand and i need the answer! you

Explain how energy from the sub is transformed and passed from one organism to another