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Rufina [12.5K]
3 years ago
14

The greatest volume of magma produced on earth occurs at ______________. hint: it's where the vast majority of new crust forms o

n earth.
Geography
2 answers:
Zanzabum3 years ago
8 0

Answer:

Divergent boundaries

Explanation:

    Unsurprisingly among scientists, continents and ocean floors are in continuous motion. This movement occurs through magmatic currents in the innermost layers of the Earth (convection currents), which eventually alter the position of the immense blocks of rock floating above the magma, called tectonic plates.

    Thus, this movement of the plates eventually leads to constant shocks in their meeting regions, which causes seismic and volcanic activities around the globe. The boundaries between such tectonic plates, however, may follow different orientations.

  • Divergent Limits: In this type of limit, there is the separation between plates. In the space created between the two large blocks, the formation of a new crust occurs through the solidification of the magma. It can occur on continents or oceans.

  • Divergent boundary in the oceans: When this type of boundary occurs in oceans, there is the creation of gigantic submerged ridges, known as dorsal oceanic. The most famous of these is the mesoatlantic dorsal, which occurs at the boundary between the North American and Eurasian plates and extends across the South American and African plates, cutting a portion of the globe from the Arctic to southern Africa.
iVinArrow [24]3 years ago
7 0

Answer:

Divergent boundaries such as the mid-oceanic ridge system.

Explanation:

Divergent boundaries occur when plate boundaries pull away from each other. Molten rock or magma rise from the gap between the two plates, rising up to the sea floor where it cools down to form new crust. It is the mid-ocean ridges where you see the most magma produced and there has not been any other tectonic event or area that could match its procution since the Precambrian period.

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describe different types of volcanoes, how do they form? can volcanoes change the climate if so how? can volcanic eruptions be p
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Answer:

There are mainly 4 types of volcanoes.

Explanation:

1. Cinder cones: They are a bowl-shaped crater,  build from particle or blobs of congealed lava that is ejected from a single gas vent, as the air is broken into small fragments that are solidified and falls as cinders.

2. Composite volcanoes: stratovolcano or composite cone are those that form a steep-sided, symmetrical cone of large dimensions built around by lavas. Some examples are Mount Shasta in California, Mount Hood in Oregon.

3. Lava domes: There internal structure is defined by bulbous masses of lava, that are too vicious.

4. Shield volcanoes: These are built entirely by fluid lava, and flow p[ours in all directions.

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Answer:

i love you :)

Explanation:

The complex politics of global warming results from numerous cofactors arising from the global economy's dependence on carbon dioxide (CO2) emitting fossil fuels; and because greenhouse gases such as CO2, methane and N2O (mostly from agriculture) cause global warming.[1]

1. Implications to all aspects of a nation-state's economy: The vast majority of the world economy relies on energy sources or manufacturing techniques that release greenhouse gases at almost every stage of production, transportation, storage, delivery & disposal while a consensus of the world's scientists attribute global warming to the release of CO2 and other greenhouse gases. This intimate linkage between global warming and economic vitality implicates almost every aspect of a nation-state's economy.

2. Industrialization of the developing world: As developing nations industrialize their energy needs increase and since conventional energy sources produce CO2, the CO2 emissions of developing countries are beginning to rise at a time when the scientific community, global governance institutions and advocacy groups are telling the world that CO2 emissions should be decreasing.

3. Metric selection (transparency) and perceived responsibility / ability to respond: Among the countries of the world, disagreements exist over which greenhouse gas emission metrics should be used like total emissions per year, per capita emissions per year, CO2 emissions only, deforestation emissions, livestock emissions or even total historical emissions. Historically, the release of CO2 has not been even among all nation-states, and nation-states have challenges with determining who should restrict emissions and at what point of their industrial development they should be subject to such commitments;

4. Vulnerable developing countries and developed country legacy emissions: Some developing nations blame the developed world for having created the global warming crisis because it was the developed countries that emitted most of the CO2 over the twentieth century and vulnerable countries perceive that it should be the developed countries that should pay to fix the problem;

5. Consensus-driven global governance models: The global governance institutions that evolved during the 20th century are all consensus driven deliberative forums where agreement is difficult to achieve and even when agreement is achieved it is almost impossible to enforce;

6. Well organized and funded special-interest lobbying bodies: Special interest lobbying by well organized groups, such as the fossil fuels lobby, distort and amplify aspects of the challenge.

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