Answer:
The magnetic field is generated by electric currents due to the motion of convection currents of molten iron in the Earth's outer core: these convection currents are caused by heat escaping from the core, a natural process called a geodynamo.
A tree is renewable because it can re grow and make more trees.
Iron is non renewable because it can’t make any more things, you can just use it that one time
4) all of the above.
This because it cause all of these things obviously
