Wegener came to consider the existence of a single supercontinent from about 350 million to 245 million years ago, during the late Paleozoic Era and early Mesozoic Era, and named it Pangea, meaning “all lands.”
Answer:
c. pyroclasts
Explanation:
An explosive eruption happens when a lot of gas gets trapped in the magma, this, combined with the high viscosity of the magma, produces a pressure build and eventual explosive eruption of magma of the volcano. During this kind of volcanic eruptions, the expelled material can immediately begin moving down the sides of the volcano forming a pyroclastic flow, <em>the resulting fragments of magma in this kind of eruptions are called tephra </em><em>(or pyroclasts) </em><em>and consist in small and large pieces of rock that are hardened, solidified, or compressed version of an originally loose pyroclastic deposit.</em>
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Tectonic activity is the movement of the plates that collectively form the crust of the earth so technically it occurs over the entire face of the earth.
Where this movement affects people is usually at the edges of the plates where they grind against one another, or slip under one another <span>This creates tremendous heat and pressure, which, in turn causes volcanic activity, earthquakes.</span>
Answer:
<h2>a globe is a round model of the earth. It shows Earth's shape and its lands. A map is a flat drawing of all or part of the earth's surface. Cartographers or mapmakers use complex mathematics to transfer shapes from the round globe to a flat map</h2>
Explanation:
The Negro and Madeira Rivers feed into the Amazon.