I think mutation so D. If not then A
Very hot during the day, cold at night
Plz give me brainalist answer
Answer:
<em>The magnetic field is generated by electric currents due to the motion of convection currents of a mixture of molten iron and nickel in the Earth's outer core: these convection currents are caused by heat escaping from the core, a natural process called a geodynamo.</em>
