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Jet001 [13]
3 years ago
14

Which type of magma may be unable to form a volcanoes

Geography
1 answer:
tigry1 [53]3 years ago
8 0

<u>Answer:</u>

Andesitic or basaltic magmas may be unable to form volcanoes.

<u>Explanation: </u>

  • For the magma to form a volcano, it is required that the magma has a substantially high content of gas and highly viscous molten or semi-molten material.
  • Neither andesitic nor basaltic magma contains high gas content or highly viscous material.
  • This makes them incapable of erupting or exploding. Rather, these magmas form creeks and flow out of them like fluid and spread on the adjacent ground.
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D. (English) is a German language.

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In a short paragraph, explain the various waves of immigration to the United States. What groups were part of each of these wave
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Answer:

sorry if its too big.

Explanation:

U.S. immigration has occurred in waves, with peaks followed by troughs (see figure). The first wave of immigrants, mostly English-speakers from the British Isles, arrived before records were kept beginning in 1820. The second wave, dominated by Irish and German Catholics in the 1840s and 1850s, challenged the dominance of the Protestant church and led to a backlash against Catholics, defused only when the Civil War practically stopped immigration in the 1860s.

The third wave, between 1880 and 1914, brought over 20 million European immigrants to the United States, an average of 650,000 a year at a time when the United States had 75 million residents. Most southern and eastern European immigrants arriving via New York’s Ellis Island found factory jobs in Northeastern and Midwestern cities. Third-wave European immigration was slowed first by World War I and then by numerical quotas in the 1920s.

Between the 1920s and 1960s, immigration paused. Immigration was low during the Depression of the 1930s, and in some years more people left the United States than arrived. Immigration rose after World War II ended, as veterans returned with European spouses and Europeans migrated. The fourth wave began after 1965, and has been marked by rising numbers of immigrants from Latin America and Asia. The United States admitted an average 250,000 immigrants a year in the 1950s, 330,000 in the 1960s, 450,000 in the 1970s, 735,000 in the 1980s, and over 1 million a year since the 1990s.

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Cultural regions are best described as being __________ because they can share one or more important elements, be any size, and
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 dominant goes into the blank
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What are four pieces of evidence for continental drift?
Alexus [3.1K]

Answer:

- Shape of the continents

- Fossils of the same species found on continents that are not connected

- Evidence of ice sheets in places that are hot in the present

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Explanation:

The continental drift theory is a theory that suggests that the continents are always on the move, thus they change their shape, location, collide with each other, move away from each other etc.

The shape of South America and Africa is one of the evidences. If the shapes of the continents are taken out of a map, and the eastern coast of South America and western coast of Africa are merged, they fit in perfectly.

There are numerous fossils of the same species of animals and plants that have been found all over the world, even though the continents are isolated and separated by water bodies.

In some places that are very hot in the presence, like South Africa, have evidence of ice sheets. In the current conditions that is simply not possible considering that the temperature in this part of the world goes well over 40 C degrees.

The mid-ocean ridges are very nice proof of the continental drift theory. They are one of the evidence that can be observed in the present, where new crust is constantly forming and pilling up, while pushing the old crust sideways further away from it.

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Mama L [17]
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