Answer:
Czechoslovakia's split into two countries
Explanation:
The Velvet Divorce is a term used for the split of Czechoslovakia into two separate countries. The separation was peaceful, without violence, so it was all negotiated without any problems, with the two newly formed nations remaining in good relations. The reasons for the split were that the two parts of Czechoslovakia had different political aspirations, had different ethnic groups, and they had different opinions as two how they should develop. It is an interesting case among the Slavic nations though, as in most cases there has always been lot of bloodshed, while in this case it was all peaceful and calm.
Slab pull does takes place at a convergent boundary and subduction zone. Slab pull therefore occurs because subducting slabs are cooler, and therefore more dense, than surrounding asthenosphere.
Subduction often takes place as a result of two plates colliding at a convergent boundary, and one plate is pushed beneath the other, back into the Earth's interior.
A oceanic plate hitting with a continental plate, will cause the denser oceanic plate to push or bent downward and slides under the edge of the continent.
Conclusively, the sinking of the tectonic plate makes the heat from beneath the Earth to melt.
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I think it is the Biospere
Most of the Earth's water is stored in the Oceans - think of how huge the Pacific Ocean is for example!
So the correct answer is b. About 97% of the Earth's water is ocean water.
Ocean water is not good for drinking for people, and post of freshwater is stored in glaciers.