Answer:
oceanic and continental
Explanation:
Earth's crust is divided into two categories, oceanic crust and continental crust. The oceanic crust is the one that is found in the oceanic plates, thus it is predominantly covered with water, while the continental crust is the crust that forms the continents, thus it is predominantly above the water. The oceanic crust is located slightly lower, they have higher density, but have lesser thickness. The continental crust is located slightly higher than the oceanic crust. This crust is significantly thicker, but it has lesser density, which is why it ''floats'' above. These two types of crust are constantly in interaction with each other, and when there is a collision between the two, the oceanic crust subducts below the continental crust. This results in the oceanic crust to move downwards to the mantle and get molten, thus destroyed, while the continental crust experiences uplift near the plate boundary. Other consequences are the emergence of volcanic island arcs and volcanic continental arcs, as well as intense earthquake activity.
The fossil fules can contribute to the economy of the country. Such as Arabian oil is sold to the US, which generates revenue for Arabia/Iraq.
Answer
The region of the earth that John Tuzo Wilson believed was broken into plates was the “Hotspots” i.e. The Hawaiian Island.
Explanation
The two major contributions of John Tuzo Wilson towards the solidification of the theory of plate tectonics were the introduction of hotspots and the recognition of transform boundaries. The earlier scientific arguments concerning plate tectonic theory was the existence of volcanically active areas present in the middle of plates. The lack of explanation was addressed by John Tuzo who used the Hawaiian island as an example of an island chain that is volcanically active which was a sticking point for some opponents of the plate tectonic theory. He explained that the origins of volcanic rocks in such places are plumes rising from hotspots within stable core of mantle convection cell.
Type of Erosion Control<span> </span>Pros of Using this Control
- Jetties - protect buildings on beaches from losing sand
- Breakwaters - Stop the waves from hitting the beach
- Beach Renourishment - easy way to prevent sand erosion
- Planting of dune grasses and plants - roots hold sand together and make it more difficult to wash away
Cons of Using this Control
- can seriously affect the tidal circulation and the health of wetlands
- changes profile of the beach
- can cause bottom organisms and habitats to e smothered by muddy water
- can make the beaches difficult to use for recreation
<span>Paragraph:
</span> I think that Breakwaters<span> are the best to use. One reason is the only major con that is has is changing the profile of the beach instead of harming wildlife and taking away funding (recreational use.) Another reason is that the rocks used provide great climbing tools for beachgoers and might entertain them. A third reason is that breakwaters can be underground as well, not damaging the beach very much. Finally, they save millions of dollars in replacing sand.</span>
