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.
Canada has the most land area of any North American country.
Some mountains are volcanoes, and some volcanoes are mountains, but not all mountains are volcanoes, and not all volcanoes are mountains. For a mountain to be a volcano and a volcano to be a mountain, it must be formed from magma and volcanic materials from below the Earth's surface.
