Answer:
I'm pretty sure its B, but if I got that wrong I'm so sorry.
The convection cell in the mantle is essentially the self-sustaining, constant movement of the magma inside this layer. This works in a very simple way. The hotter magma is less dense, so it is pushed upward toward the crust above it, while the cooler magma is denser, and it moves downward where it gets hotter, and the process goes on and one. The magma that goes upward toward the crust, manages to push through the thinner and cracked crust between the plates that move away from each other, thus on the divergent plate boundaries. As the magma penetrates through the crust it manages to get to the ocean floor, thus causing volcanic activity. This magma cools of very quickly and creates new crust. Because the magma constantly rises up and creates new crust, the crust piles up and forms an underwater mountain of volcanic origin that constantly has volcanic activity because of the rising magma. This volcanic underwater mountain range is called mid-ocean ridge.
Answer: A Germany
Explanation: Germany is a federal, parliamentary, representative democratic republic. Its political system is based on the constitutional law.
<span>Plastics are nonpolar and water is polar. Like dissolves like. Therefore plastics dissolve in nonpolar liquids, like toluene. Plastics are usually made of only carbon and hydrogen bonds, which normally give rise to nonpolar compounds.
</span>
By dissolving the alkali in the glass composition, a porous surface is left that consists of the silica network with holes where the alkali has been removed by the acid. Corrosion by water is similar to acid corrosion in that alkali is removed from the glass surface. Water<span> corrosion acts at a much slower rate.
</span>
