Can Someone please help?!?!!

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

Why are pipes bursting in the in extremely cold weather?

In 2002, the rare earth elements mine in mountain pass, california was closed because