The lower mantle is composed of magnesium, iron-bearing silicates, olvine, and pyroxene.
1) heat from radioactive decay in the core of the Earth heard the mantle.
2) Plates move averagely only a few cm a year, this has been happening ever since the planet formed and cooled to give a thick crust so this movement has added up over many years to move plates far from where they started.
3) because the mantle is heated and is able to flow slowly, convection currents are set up which cause the plates on the crust to move.
The first hispanic heritage was celebrated in the united states in the year 1968
The correct answer of the given statement above whether it is true or false would be TRUE. It is true that the Andean nation of Bolivia is poor, but but<span> rich in natural attractions that fuel a growing ecotourism economy. </span><span>Bolivia is named for Simon Bolívar. He is the liberator of much of South America that is poor, mountainous, and landlocked. Hope this answer helps.</span>
