What is a major cause of the Earth's magnetic field

The Earth's magnetic field is mostly caused by electric currents in the liquid outer core. ... Convection of molten iron within the outer liquid core, along with a Coriolis effect caused by the overall planetary rotation, tends to organize these "electric currents" in rolls aligned along the north-south polar axis.

Explanation:

Electric currents in the liquid outer core are primarily responsible for the Earth's magnetic field. Convection of molten iron within the outer liquid core, combined with the Coriolis force generated by the total planetary rotation, tends to organize these "electric currents" into rolls lined north-south along the polar axis.

technical documents should be clear and precise. basically, clarity is the key element in a successful technical document.

the answer is: the start of world war i, and russia’s hopes of benefiting from it

during world war i russian joined due to in their current crisis they were being supported by france and the war was already declared to them by germany, they needed to maintain their political goal and leadership role in the balkans, and is the same feeling that this excerpt evoke the eager of maintain the land value.