Answer:
The Earth's magnetic field is believed to be generated by electric currents in the conductive iron alloys of its core, created by convection currents due to heat escaping from the core.
Oil would be one of the greatest deposits in Mexico.
Geothermal energy is not a fossil fuel.
A large active duty military force is a feature in certain
countries. Maintaining an active military force is dependent on factors such as
political will, magnitude of perceived external threats, and availability of
up-to-date military technology. Despite the expense of maintaining an active
military outfit, those are the good reasons why relatively low GDP nations like
India, China, North Korea, Pakistan, Vietnam and Myanmar are able to maintain
high scores in terms of active military personnel.