The Cold War occurred around just 30 years after the communist revolution in Russia.
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Answer:
<u>e. All convergent plate boundaries are subduction zones</u>
Explanation:
- It's well known that any place either on land or ocean when is subdued into the earth's mantle is formed by a subduction zone where the plate boundaries collide either oceanic or continental boundaries this collision can result from the earthquake and volcanic eruptions.
- These collisions thus lead to the creation of mountains and volcanoes at greater altitudes as the place gets elevated and as a result of the slab push and pull as many earthquakes generally occur in this shallow zone also named as the Benioff zone.
- Plates dip here at an angle of 45 degrees and thus form these internal subduction zones that lead to lithospheric density differentiation
Answer:
The layers constitute fossils, calcium carbonate rocks
Explanation:
- Limestone is a biologic sedimentary rock and is formed by the collection of shells and debris. It can also be formed by the chemical process of sedimentary and precipitation of calcium carbonate.
- The limestone is composed of calcium carbonate, calcite, feldspar, and Quartz. Limestone represents karst topography and consists of the chemical composition of clay, iron, feldspar, and quartz. These are arranged in layers.
Wegener could not provide a wholly acceptable explanation for the movement of the continents.
Explanation:
Alfred Wegener is the person that developed and promoted the continental drift theory. Despite him having developed the basic idea behind the process, as well as managing to find several clues to support it, his ideas were not accepted by the other scientists and he found it extremely hard to gain support. The main reason as to why this was the case was that he didn't really had wholly acceptable explanation about the movement of the continents.
Everything that Wegener provided as evidence was correct, and it was proving a point. The problem was that he still lacked explanation for the driving force of this process, nor did he had any proof about it, and that was the basis for all other things. Every clue that he had was the final product, but no one could explain as to how that actually happened.
Some of Wegener's evidence were:
- identical fossils on different continents
- matching coastlines
- spreading zones
- matching rock strata on different continents
Learn more about the continental drift theory brainly.com/question/5002949
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