B. a few kilometers below Earth’s surface.
C. just below Earth’s surface.
D. on Earth’s surfac
Most metamorphic processes take place B. a few kilometers below Earth’s surface.
Metamorphism is the change of minerals or geologic texture in pre-existing rocks without the protolith melting into liquid magma. Metamorphism often occurs on two scales: contact and regional. Contact metamorphism occurs locally in areas adjacent to igneous intrusions or in areas that are in contact with hot water known as hydrothermal fluids. Whereas regional metamorphism occurs over much larger areas such as rising mountain ranges, large igneous intrusions can form and warp overlying strata increasing the pressures above the intrusion. Regional metamorphism usually produces foliated rocks such as gneiss and schist.
There are other ways that metamorphic rocks can form, Dynamic metamorphism. Dynamic Metamorphism also occurs because of mountain-building. The huge forces of heat and pressure cause the rocks to be bent, folded, crushed, flattened, and sheared.
Metamorphic rocks form when increased heat and pressure force physical changes in the crystalline structure of an existing rock. Under the right conditions, any type of rock can become a metamorphic rock including igneous rocks, sedimentary rocks, and even other metamorphic rocks. Therefore metamorphic processes result due to intense heat and high pressure below the Earth's surface.
Grade: 9
Subject: biology
Chapter: metamorphic processes
Keywords: metamorphic processes
Most metamorphic process takes place a few kilometres below Earth’s surface. The metamorphic process occurs due to the presence of intense heat and high pressure below the surface of Earth.
Further Explanation:
The metamorphism of rocks is due to either due to the physical or chemical alteration by dense heat and high pressure exhibited by a sedimentary or igneous material into a denser form. Rocks are compacted into a smaller volume of space due to actions of tectonic plates, presence of shearing forces for a more extended period, stress and compression. All these factors play an essential role in the wrapping and deformation of rocks.
Due to this, the metamorphic rocks are denser than the original sedimentary material. So such rocks are less susceptible to breakdown due to erosion. The process of metamorphism is also influenced by chemically active fluids that are circulated around the newly forming rock and also introduce different ions results in the formation of a new and different mineral.
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Answer Details:
Grade: High School
Subject: Biology
Topic: Minerals and Rocks
Keywords:
Metamorphic rocks, erosion, sedimentary rocks, rocks, igneous rocks, minerals, chemicals, lava, temperature, pressure.
The right answer for the first gap is monomer.
The right answer for the second gap is polymer.
The polymer is a large molecule consisting of basic units called monomers (or monomer units) connected by covalent bonds.
A monomer is a compound of simple molecules that can react with other monomers to give a polymer.
Spores
Hyphae
Molds
Saprophytes are fungi which obtain nourishment from decaying plants.
Answer, saprophytes
b. hydrogen
c. oxygen
d. hydrologic
Answer:the legume family
Explanation: