HOW PERSIAN WHEEL WORKS PLEASE TELL ME IN EXPLAIN

Scientist believe that earths core is around 6000°c where does this heat come from

[ou.01]which of these is the most likely use of an electromagnetic wave which has wavelength shorter than microwaves but longer than visible light? o heat food safely o neat food safely o take images of bones and teeth o transmit radio and cellular phone signals o take images of bones and teeth o transmit radio and cellular phone signals o detect the location of objects which emit heat

Which was not a country that massively built up its navy in the early 1900s? germany china united statesbritain