A reef than surrounds a volcanic island is an : Atoll
Atoll usually takes shapes in a form of ring that surround the areas of volcanic island that consist of corals. It usually only exist in warm waters, so volcanic islands will provide perfect environment for the corals
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Answer:
Tectonic Plates and Plate Boundaries
You can actually see New Zealand’s plate
The Earth’s outer shell, the lithosphere, consisting of the crust and uppermost mantle, is divided into a patchwork of large tectonic plates that move slowly relatively to each other. There are 7-8 major plates and many minor plates. Varying between 0 to 100mm per year, the movement of a plate is driven by convection in the underlying hot and viscous mantle.
Comparing the speed of p waves and s waves
If you look at the "memory" of the rocks being created and moving away from each other at the mid-Atlantic ridge, you can see where the magnetic poles flipped from north to south and back again.
<span>Looking at the rocks each side of the ridge shows that they are magnetic mirror images of each other and therefore that the surface of the Earth (at this point) is moving away from the ridge.</span>
Answer:
Explained below
Explanation:
Generally speaking, for a civilization to thrive, it needs a water source. Hence why many cities are located in the coast or nearby rivers. In addition, much of Brazil is jungle, the areas which have very rough climate simply don't have enough people living in them as the living conditions are very harsh. Specially in the state of Amazonas.