15 The diagram shows the electrolysis of aqueous sodium bromide and molten sodium
bromide.
Copper wire
Aqueous
sodium
bromide
Molten sodium
bromide
graphite
electrodes
Which substance in the diagram has both positive ions and mobile electrons?
A
Aqueous Sodium bromide
B Copper Wire
СGraphite electrodes
D Molten sodium bromide​

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).

you did not give any options thus this is the best answer i can give to you with this little information you have given

> they are both natural and not man made

> they can be tracked and predicted by the right tools

-love shrooms