Which is older the grand canyon or the rock layers now exposed on the canyon walls explain your reasoning

What term is given to the border between the central alps and the southern limestone alps?

Why have the countries of the region had difficulty establishing democratic governments in recent years? choose all answers that are correct b is also correct i need to know if theres any morecommunists have overtaken the countries of the caucasus region. the soviets established national borders in the region without considering the location of ethnic groups. fighting continues between armenia and azerbaijan over the nagorno-karabakh region. civil war between communists and islamic groups in tajikistan resulted in thousands of deaths and refugees are forced to flee. in a test!

Which layer surrounds the center of the earth? a: crust b: core c: mantle