The Andes in western South America is an example of a landform that arises from the movement of the tectonic plates.
The Andes mountain range is the mountain range that runs along South America's whole Pacific Ocean coast in the west. It is the world's longest continental mountain range, stretching 8500 km.
It was created by the convergence of the South American and Nazca plates towards the end of the Late Cretaceous, at the end of the Mesozoic era. In the relief configuration, seismic movements and consequent volcanic activity have been more significant than external erosive processes.
There are high mountain ranges in the existing morphology, as well as broad high plateaus, deep longitudinal valleys, and vast mountain ranges. Except for in the Argentine-Chilean Andes, transversal valleys are uncommon.
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Along with the fact that the infrastructural and industrial levels of the African colonies was never really developed by Europeans, the many various and opposing ethnic groups had no one to keep them in check now. As a result many civil wars took place between different religions, specific religious denominations, and specific ethnic groups of said religious denominations. Also nearly all of the leaders that broke free of European rule were woefully unprepared to lead a country both governmentally and economically. All of these factors are what lead to Africa's current problems.
The correct answer is B. Lava flows, pyroclasts.
Explanation
A volcano is a mountain or hill that has an opening through which gaseous, liquid or solid materials can escape from the interior of the Earth. At the top of this cone, there is a concave formation called crater or chimney. When activity occurs in a volcano it is because it is erupting. Also, when it is erupting, the molten rock that comes from the Earth's mantle, known as magma, comes out. Once the magma comes to the surface, it loses the gases it contains because it evaporates, and when it drains the slopes of the cone it is known as lava, which flows from the top of the volcano. Finally, the waste expelled by a volcano through its crater during an eruption is known as pyroclasts. So, the correct answer is B. Lava flows, pyroclasts.
