True. As the seafloor spreads, the distance between Africa and South America is decreasing.
Why does seafloor spreading occur?Seafloor spreading occurs when two plates spread apart due to convection currents in the mantle. This process creates new oceanic crust and pushes existing plates away from each other, resulting in an increase in the size of the oceanic basin. The heat from the mantle creates magma which rises through the oceanic crust and cools when it reaches the surface, forming new oceanic crust.
How does seafloor spreading affect Earth's surface?Seafloor spreading affects Earth's surface by changing the size and shape of the oceans. As plates move apart, new oceanic crust is formed and the ocean basin widens. This can cause changes in the shoreline and can cause earthquakes and volcanoes. Seafloor spreading also affects the formation of mountains and islands, as the plates push against each other. These changes in Earth's surface have a profound effect on global climate, as they can affect wind and water patterns.
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According to the big bang theory, which element most likely formed first?
DNA is a two-stranded molecule connected via hydrogen bonds, with each base on one strand connected to a base on the other side. Explain why the two strands of DNA stay together.
The Sahel, once home to many grazing animals, is quickly becoming part of the Sahara Desert for
all of the following reasons EXCEPT—
answer choices
over-grazing
air pollution
over-crowding
poor land management
Option b, Overgrazing, poor land management, and overcrowding are just some of the factors contributing to the increasing desertification of the Sahel region, the region between the Sahara and the savannah of Africa.
Land collapse and lack of vegetation have depended this area from a field into a desert.
Nevertheless, air pollution plays a minor role in desertification in the Sahel, as it is not a major and pressing concern in the region compared to other natural problems.
Maintaining the delicate balance of the Sahel's natural framework remains a challenge, and addressing the underlying causes of desertification is critical to prevent further loss of the Sahel's indigenous biological systems.
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what is the thickest layer of the earth, made up of molten rock?
The thickest layer of the Earth is the Earth's mantle, which is made up of molten rock.
The mantle is the layer that lies between the crust and the outer core of the planet. It is approximately 2900 km thick and makes up 84% of the Earth's total volume.
The mantle is composed mostly of iron, magnesium, and silicon-based minerals, which are held together by the intense pressure and heat of the Earth's interior. The mantle is also the source of much of the Earth's volcanic activity, as it contains pockets of molten rock that are released as magma through volcanoes.
The mantle also plays a role in the movement of the Earth's tectonic plates, which are constantly shifting and sliding against each other.
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continental crust a. is thinnest beneath zones of stretching, called rifts. b. is denser than oceanic crust. c. is thinner than oceanic crust. d. is more mafic than oceanic crust.
The correct answer is option a. is thinnest beneath zones of stretching, called rifts.
Continental crust is the outermost layer of the Earth's crust and is made of low-density, relatively thick and granitic rocks. It is thinnest beneath zones of stretching, called rifts, where the lithosphere is being pulled apart.
Continental crust is denser than oceanic crust, which is composed of high-density, relatively thin and basaltic rocks. Oceanic crust is much thinner than continental crust, and is composed of more mafic rocks than continental crust, which is composed of more felsic rocks.
The composition of continental crust varies depending on the tectonic setting and the age of the crust, but on average, continental crust is about 40 km thick.
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what is fractional crystallization?what is fractional crystallization?melting of part of a rock, leaving behind solid rock with the same composition as the original magmacrystallization of part of a magma, leaving behind melted rock with a different composition from the original magmamelting of part of a rock, leaving behind solid rock with a different composition from the original magmacrystallization of part of a magma, leaving behind melted rock with the same composition as the original magma
Fractional crystallisation is the separation of two or more crystalline solids based on the differences in how soluble they are in the same solvent. The viscosity of the silica, which makes up the magma, increases with its concentration.
The term "fractional crystallisation" describes procedures that distinguish crystals from liquid. When this occurs, the liquid that is left over is regarded as a new magma. The crystals can be separated from a magma using a variety of techniques. Numerous minerals have denser compositions than the liquids they crystallise from.
Fractional crystallisation is essentially the removal of early-formed crystals from an initially homogenous magma, for instance, by gravity settling so that these crystals are stopped from further reacting with the remainder melt.
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yolanda is speaking about the effects of climate change and decided to provide a description of what the world will look like in 2050. what type of support material is yolanda using?
The supporting material that can be used by Yolanda is a hypothesis. This is because the material used by Yolanda is presumptive or temporary.
Definition of HypothesisThe etymological hypothesis comes from the Greek, namely Hypo which means weak and Thesis which means theory. So the meaning of the hypothesis is a statement that is still weak in nature because it still needs to be proven. The hypothesis can also be regarded as a temporary guess in a study.
The hypothesis serves as a temporary answer or conclusion to a problem. Directing researchers in finding and collecting data. Clarify a situation that was still vague. Helps predict things that might happen.
The hypothesis has the following characteristics. It needs to be tested for truth, must state a relationship, must be testable, the shape is simple, and based on facts.
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question 9 the hornfels facies is a metamorphic realm of a. high temperature and pressure. b. high pressure but low temperature. c. high temperature but low pressure. d. low temperature and pressure.
The hornfels facies is a metamorphic realm of high temperature but low pressure (C)
A hornfels is a rock that has been changed by heat. This means that the textures of hornfelses are the result of crystallization, or recrystallization, which happens at high temperatures and low to moderate pressures when there is no directed pressure. The aureole of granitic intrusions in the upper or intermediate crust is the most prevalent location for the formation of hornfels. Minerals that are rare and unique can be produced when hornfels undergo contact metamorphism as a result of volcanic activity that occurs extremely near to the earth's surface.
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The major evolutionary episode corresponding most closely in time with the formation of Pangaea was the Pleistocene ice ages. Cambrian explosion Cretaceous extinctions. Permian extinctions
False. The major evolutionary episode corresponding most closely in time with the formation of Pangaea was the Permian extinction, which occurred around 250 million years ago.
The Pleistocene ice ages occurred much later, around 2.6 million to 11,700 years ago. The Cambrian explosion, which marked a major diversification of life on Earth, occurred around 541 million years ago, while the Cretaceous extinctions, which wiped out the dinosaurs, took place around 66 million years ago.
The major evolutionary episode that corresponds closely in time with the formation of Pangaea was the Permian extinction, which occurred about 252 million years ago and led to the extinction of more than 90% of marine species and 70% of terrestrial vertebrate species.
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Which of these landforms would most likely be found at a divergent boundary? answer choices. Fault line. Mid-ocean ridge. Volcanic island. Mountain.
Mid Ocean Ridge is the boundary where the landforms would most likely be found, hence option (B) is the correct answer.
What is a Mid Ocean Ridge ?A seafloor mountain system created by plate tectonics is known as a mid-ocean ridge (MOR). It often extends above the deepest part of an ocean basin by about 2,000 meters (6,600 feet) and is roughly 2,600 meters (8,500 feet) deep.
Along a divergent plate border, this feature is where seafloor spreading occurs. The shape and width of the mid-ocean ridge in an ocean basin depend on the rate of seafloor spreading.
Mantle upwelling in reaction to plate separation creates new seafloor and oceanic lithosphere. The melt rises as magma at the line of weakness where the separate plates meet, then emerges as lava and cools to produce new oceanic crust and lithosphere.
Hence the correct answer is option (B).
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Cole works at a mattress company that maintains several large hotel chains as customers. Based on this, what is
Cole's place of work referred to as in the hospitality and tourism industry?
O
lodging business
O
perishable business
O
entertainment business
O
allied business
Fancy hotels, early life hostels, elder hostels, campgrounds, inns and other businesses that supply a area for people to sleep overnight are all in the lodging industry.
What are the 4 foremost categories of the hospitality industry?The hospitality industry is considerable and can be broken down into separate sectors. The top four sectors consist of; 'Food and Beverage', 'Accommodation', 'Travel and Tourism' and 'Entertainment and Recreation'.
Hotel operations roles are available in a wide vary of departments: the front desk, catering, events, housekeeping and human resources. Professionals in operations oversee the daily things to do of their teams, and intention to make certain guest satisfaction.
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https://brainly.com/question/12117796#SPJ1what igneous rock has a cooling history that is both intrusive and extrusive, and has a felsic mineral composition?
Answer: felsic rocks
Explanation:
how does continental crust differ from oceanic crust? continintal crust is thinner than oceanic crust the average composition of continental crust is granite whereas oceanic crust is mainly basalt continental crust usually occurs above oceanic crust the lithosphere only includes continental but not oceanic crust
What do we call the top half section of the mantle?
The top half section of the mantle is called the asthenosphere.
Why is the mantle so important?The mantle is important because it is the layer of the Earth located between the crust and the core, and it is believed to be the source of the Earth's heat and magnetism. It is also the layer in which plate tectonics and other geological activity takes place. It contains a significant amount of rock, minerals, and other materials which are essential for the Earth's structure, composition, and evolution.
Why is the asthenosphere important?The asthenosphere is important because it is the layer of the Earth's mantle that is most responsible for plate tectonics. It is a relatively weak layer that is plastic and allows the lithospheric plates to move and interact. It is also important because it is the source of much of the Earth's volcanic activity and helps to drive convection currents in the mantle that are responsible for the movement of heat and materials within the Earth.
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true or false: gps measurements of surface deformation can help us estimate the potential magnitude of the next earthquake to occur on a particular fault.
The given statement "gps measurements of surface deformation can help us estimate the potential magnitude of the next earthquake to occur on a particular fault" is true.
GPS measurements of surface deformation can help us estimate the potential magnitude of the next earthquake to occur on a particular fault.
By measuring the amount of displacement that has occurred on the fault, scientists can estimate the amount of energy that has built up on the fault, and therefore the potential magnitude of the next earthquake that could occur.
GPS measurements can also be used to determine the location of the fault and the direction of displacement, which can help scientists to better understand the seismic activity of a particular fault and the behavior of earthquakes in the area.
This can help inform the development of earthquake prediction models and help researchers prepare for future earthquakes.
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american sign language varieties have increased in the african american deaf population due to: group of answer choices convergence and identity variety and cartography geography and physical isolation
American sign language varieties have increased in the African American deaf population due to convergence and identity.
What is Cartography?Making and utilizing maps is the study and practice of cartography. Cartography, which combines science, aesthetics, and method, is based on the idea that reality can be described in ways that effectively convey spatial information.
Americans who are Deaf speak a different language, quite literally. Their language, American Sign Language (ASL), not only allows them to communicate with other Deaf people, but also gives them access to a linguistic subculture that not everyone has the opportunity to experience.
The use of additional facial emotions and personality are some of the main features of Black ASL. Many Black ASL signers claim that in comparison to ASL, signing allows them to express more of their "attitude" and "persona." You'll see that Black ASL also makes advantage of additional signing space.
Therefore, Option (a) is correct.
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approximately where is it currently high tide on earth?
Answer:
at the eastern part of the earth
how does a phenomena become a disaster
Answer:
by people ignoring it until the last min
Explanation:
glacial loess from the last ice age would best be found where? select the location of glacial loess deposits discussed in the faculty presentation.
Glacial loess from the last ice age would best be found in Palouse county of eastern Washington, Loess Plateau in China, and the Midwest of the US.
Loess is created mostly by wind, but it can also be formed by glaciers. Loess can form when glaciers grind rocks to a fine powder (dust). Streams can carry the powder to the end of the glacier and the sediment becomes loess.
The Palouse county, the Loess Plateau in China, and the Midwest of the USA are locations where dust was deposited that originated in glacial terrains, and the dust was blown to nearby spots where it accumulated.
The question is a multiple choice question and the multiple choices are most probably these:
A) Palouse county of eastern Washington
B) Loess Plateau in China
C) Midwest of the United States
D) All of these are correct
In that case, the correct option is option D.
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Why are the axes of rotation of the planets not found to align perpendicular to the ecliptic?
The axes of rotation of the planets not found to align perpendicular to the ecliptic because the apparent location of the Sun takes a year to accomplish a full round of the ecliptic because Earth takes a year to orbit the Sun.
The ecliptic plane is coplanar with Earth's equatorial plane, but they are inclined to one another by an angle of around 23.4° because Earth's rotating axis is not perpendicular to its orbital plane. This angle is referred to as the ecliptic's obliquity. When the equator is pushed outward to the celestial sphere, it crosses the ecliptic at two places known as the equinoxes.
The Sun crosses the celestial equator at these locations in its apparent travel along the ecliptic, one from south to north and the other from north to south. The vernal equinox, also known as the first point of Aries and the ascending node of the ecliptic on the celestial equator, marks the passage from south to north.
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what is the relative temperature and name of the surface ocean current that affects the climate of location e?
Answer: cool california current
Explanation:
atmospheric rivers exist high in the atmosphere and require high amounts of moisture and weak winds to transport moisture horizontally. group of answer choices true
It is highly inappropriate to be mentioning that the atmospheric rivers tend to exist higher in the atmosphere, and also require high amounts of moisture and weak winds to transport moisture horizontally. Thus, the statement given above is false.
The atmospheric rivers are usually tended to exist very lower in the atmosphere, where they can get created with very lower levels of moisture. Moreover, the areas in which these rivers exist need to have a highly windy atmosphere, wherein it transports the moisture horizontally.
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Which of the following are other natural disasters that earthquakes produce?
The other natural disasters that earthquakes produce are:
A.tsunamis
B.landslides
C.liquefaction
Why do earthquakes happen?Earthquakes typically result from subsurface rock breaking unexpectedly and rapid movement along a fault. The seismic waves that cause the ground to tremble are brought on by this quick release of energy.
Sudden tectonic changes in the earth's crust are what generate earthquakes. Orogeny, which causes earthquakes and volcanoes, is caused when the tectonic plates glide over one another. Vibrations produced by these disturbances travel in all directions.
Therefore, option A,B and C are correct.
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missing options:
A.tsunamis
B.landslides
C.liquefaction
D. natural mixing
What is Iceland known as?
Answer:
the land of fire and ice
Explanation:
im like 90% sure because i just did a quiz on this
dynamothermal metamorphism occurs when a. rock becomes deeply buried during continental collision and mountain building. b. a metamorphic aureole forms in which hornfels develops. c. a pluton causes metamorphism in a small surrounding area. d. metamorphic reactions segregate different mineral types into different layers.
Dynamothermal metamorphism occurs when a. rock becomes deeply buried during continental collision and mountain building.
Formation process of metamorphic rocksMetamorphic rocks are metamorphic rocks from pre-existing rocks that are manifested by changes in mineral composition, texture, and rock structure (solid fraction) occurring in the solid phase due to changes in temperature, pressure, and chemical conditions within the crust (Ehlers and Bratt, 1982).
Metamorphic rocks are therefore formed by changes caused by metamorphic processes. Metamorphic processes are processes of alteration of rocks due to changes in pressure, temperature, and the presence of liquid/gas chemical activity, or changes in these three factors.
Metamorphic processes are isochemical processes in which chemical elements are not added to metamorphic rocks. It has a temperature range of 2000 C to 8000 C and does not pass through the liquid phase (Dicate of Petrology Practicum, 2006).
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Which of these best explains one of the reasons why Africa is home to a wide variety of plant and animal species? A. Africa’s human population lives in cities with limited interaction with nature.b. African governments import exotic animals from other countries. C. The African continent lies within the tropical zones. D. The African continent rarely experiences prolonged droughts.
The one reasons why Africa is home to a wide variety of plant and animal species is because the continent lies within the tropical zones. The Option C is correct.
Why are tropical zones favorable to most plant and animal species?A rainforest is characterized by tall, mostly evergreen trees and abundant rainfall. Rainforests are the Earth's oldest living ecosystems, with some having existed for at least 70 million years.
Because tropical rainforests are so warm and moist, they generate up to 75% of their own rain through evaporation and transpiration. Such abundant sunlight and moisture are essential building blocks for the diverse flora and fauna of tropical rainforests. Approximately half of the world's species can be found here, with 40 to 100 or more different tree species present in each hectare.
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which fact is true of california’s inyo national forest?
The truth about California's Inyo National Forest is that it is among the most popular wilderness areas in the country.
What is the Inyo National Forest?The 165-mile Inyo National Forest is located close to the boundary between California and Nevada. It is largely just on eastern side of the Sierras and covers around 2 million acres. Nine Congressionally declared Wilderness Areas total almost a million acres.
What is Inyo renowned for?Beyond this, experts concur that Inyo County offers superb trout fishing, Sierra Nevada trekking, and stunning views. Inyo County also has the best mountain biking, hanging glider, horse packing, and spring backcountry skiing anywhere in the world.
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What type of system is governed as a single power in which the central government is ultimately supreme and
any administrative divisions (sub-national units) exercise only the powers that the central government chooses
to delegate?
OCTIT
O a
b
Oc
Od
Next Bes
Confederate
Military
Unitary
Federal
Strong
Central Authority
The type of governance which is governed as a single power in which the central government is ultimately supreme and any administrative divisions (sub-national units) exercise only the powers that the central government chooses to delegate is unitary.
What is a unitary government?A unitary government is a system of government or political set up whereby generally, or virtuall the entire activities or processes of the governing power resides in a centralized government, as opposed to a federal government. In other words, a unitary government is a system of government whereby power is concentrated at the centre.
Therefore, the correct answer is as given above
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what force besides gravity controls the orbit of a planet or moon?
Answer: Gravitational attraction
Explanation:
the general pattern of winds around a high pressure area is clockwise, outward. the general pattern of winds around a low pressure area is counterclockwise, inward. based on the information provided, which city shown will most likely have winds from the south?
The general pattern of winds around a high pressure area is clockwise, outward. the general pattern of winds around a low pressure area is counterclockwise, inward. based on the information provided, In Rockford will most likely have winds from the south.
ABOUT WIND DIRECTIONWind direction is reported by the direction of origin. For example, northerly winds blow from north to south. Wind direction is usually reported in cardinal directions or in degrees azimuth.
Wind direction is measured in degrees clockwise from north. As a result, winds blowing from the north are 0° (360°); winds blowing from the east have a wind direction of 90°; the wind blowing from the south has a wind direction of 180°; and the wind blowing from the west has a wind direction of 270°. In general, wind direction is measured in units from 0° to 360°, but can also be expressed from -180° to 180°.
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