Which is not true about glial cells? There is only one type of glial cell
They communicate with other glial cells and neurons
They remove debris
They outnumber neurons 10:1

Good moring let me you on this question the answer the electric force  have a good day ; )

Year  1936,  lehman predicted that the earths 'inner core' is solid. she observed that the seismic signals during her study were bent and did not pass through instead bouncing back. later it was confirmed that the earth's inner core was solid made up of nickel-iron and had a molten outer core.

This question is incomplete and not physics but i'm  willing to if you can give a better question

'b ' is the correct conclusion.