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madreJ [45]
3 years ago
5

Where does the melted rock from a volcano come from?

Geography
2 answers:
GarryVolchara [31]3 years ago
7 0

The answer is magma

It is also called volcanic glass

this happens when a volcano explodes and the lava cools down.

Hatshy [7]3 years ago
3 0

Answer:

The magma moves upward and erupts to form either an oceanic ridge or a hot spot volcano. At subduction zones, volatile compounds (especially water) escape from the subducting plate and lower the melting temperature of the overlying mantle rocks. This triggers melting and magma forms as a result.

Explanation:

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castortr0y [4]

Answer:

  • fertilizer/chemicals
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Explanation:

  • Fertilizers and chemicals are important contaminants of water and enter ground both directly and indirectly. In the case of Karst landscapes, the contaminated water infiltrates into the groundwater through underground streams or percolation.
  • Oil and gas spills also pose a serious problem for groundwater contamination as they can pollute aquifers near fracking zones and other oil extraction areas.
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3 years ago
What rocks forms when limestone undergoes metamorphism?
solniwko [45]

Answer:

Marble is the correct answer.

Explanation:

Marble rocks forms when limestone undergoes metamorphism.

Marble rock is formed from the limestones,when the limestone is influenced by heat and tremendous pressure it transforms in marble through a method called metamorphism.

During the metamorphism, limestone gets recrystallizes and result in the formation of interlocking carbonate mineral crystals that form the marble.

6 0
3 years ago
National Parks are:
liq [111]

Answer:

The correct answer is D. National Parks are an invention of the United States that has spread around much of the world, as a way of protecting some of the finest parts of the world.

Explanation:

A national park is a park in which the protection of nature comes first, albeit almost always in alignment with human activities (in particular recreation, often also forestry, agriculture, hunting and fishing, sometimes mining) in and around the national park. The state usually recognizes the national significance of such a park and guarantees its protection. The term was coined in the US around 1870. Shortly thereafter the Yellowstone National Park was founded in a special area with geysers and bison among others. This park serves as an example for many other parks. Since then, hundreds of national parks have been established worldwide.

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3 years ago
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GrogVix [38]

Answer:

Northern European economies are highly industrialized.

Explanation:

Northern Europe is comprised as a region of five countries, Finland, Norway, Sweden, Denmark, and Iceland. All of these countries, until the mid 20th century were relatively poor in not developed, but this drastically changed since then. All of these five countries had excellent policies when it came to the development of their societies in every possible aspect.

mic Despite not being countries that are blessed with good climate, soil, highly valuable natural resources, these countries managed to beat the odds and very quickly became among the most developed countries in the world. The economies nowadays are highly industrialized, but it is generally industries from the tertiary economic sector and more and more prevalent toward the quaternary economic sector. The population has a high standard of living, excellent healthcare, excellent education, it has among the highest life expectancies, and even the prisons and the programs in them are the best and most efficient in the world.

6 0
3 years ago
What region around a river is not normally known for fertile ground?
Finger [1]
The answer is headwater
6 0
3 years ago
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