Answer:
The magma that melts in the upper mantle and erupts at the mid-ocean ridge has a different composition (higher in Ca, Mg, Fe and relatively lower in Si and Al) than the composition of the magma (more Si, Al, Na, K rich in relative terms) that built the continents. Melting different degrees (2%, 5%, 30%) of a rock with a mantle-like composition generates magma of different Al, Si contents. Continents grow at their edges by partial melting of oceanic crust that is being subducted, generating magmas of a somewhat more Si, Al-rich composition than the subducting slab itself. The chemistry and physics of melting a mixture of minerals rather than one homogeneous substance has the wonderful outcome of creating two distinct types of crust:
Answer:
A)ARISTOTLE
that is the answer which is A
Answer:
"Genghis Khan"
Explanation:
The Mongol Empire began from this union of many wandering clans in the Mongol motherland beneath the power of Genghis Khan, whom a committee declared king of all the Mongols in 1206. Such an empire expanded quickly following his rule and that of his descendants, who conveyed incursions in all directions.That vast transcontinental empire combined the East with the West by a strengthened Pax Mongolica, supporting the distribution and transfer of business, technologies, products, and beliefs beyond Eurasia.
Answer:
mark brainliest :)
Explanation:
The main exports from Latin America are agricultural products and natural resources such as copper, iron, and petroleum.
Answer:
i think its the last one hope this helps
Explanation:
