The boundary where two plates meet and trenches are formed is called a convergent boundary or a subduction zone.
What is boundary where two plates meet and trenches are formed is called?A convergent boundary is a type of tectonic plate boundary where two plates come together and collide. There are three main types of convergent boundaries: oceanic-continental convergence, oceanic-oceanic convergence, and continental-continental convergence.
In an oceanic-continental convergence, an oceanic plate and a continental plate converge. The denser oceanic plate subducts or sinks beneath the less dense continental plate. .
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In what ways did networks of interaction in the Western Hemisphere differ from those in the Eastern Hemisphere?
How are seafloor sediments useful in reconstructing past ocean conditions? Choose all that apply. a. Biogenic oozes are composed of organisms that used to live on the seafloor, so their distribution provides information about deep-ocean conditions. b. Siliceous oozes on the seafloor indicate a warm surface ocean directly above the deposits. c. Sediments that accumulate on the seafloor provide information about ocean conditions at the time that the sediment was deposited. d. Calcareous oozes on the seafloor indicate a cool surface ocean directly above the deposits. e. Changes in the composition of the seafloor sediment reflect changes in the depositional environment.
Answer: Options C & E
Explanation:
Option C : Sediments that accumulate on the seafloor provide information about ocean conditions at the time that the sediment was deposited
Option E: changes in the composition of the seafloor sediment reflect changes in the depositional environment
Answer:
Seafloor sediments are useful in reconstructing past ocean conditions by:
c. Sediments that accumulate on the seafloor provide information about ocean conditions at the time that the sediment was deposited.
e. Changes in the composition of the seafloor sediment reflect changes in the depositional environment.
Explanation:
Seafloor sediments are the remainings found in the bottom of the ocean. These can come from organic or inorganic sources. The organic ones are formed from the rest of microorganisms, animals, or plants. While the inorganic can come from the earth, volcanic events, or minerals. Both inorganic and inorganic come from the ocean or the land outside the oceans. Therefore they can be used to explain the ocean conditions as well as the changes in the seafloor.
Coquina is a rock made of small pieces of broken shells. Ocean waves break seashells into smaller pieces. Over time, these pieces are moved and deposited. When they stick together, they form coquina. Coquina is most likely a(n) ________.a. igneous rockb. metamorphic rockc. sedimentary rock
Answer:
Option (C)
Explanation:
Coquina is usually defined as a sedimentary limestone rock that is found to be present in the freshwater zones and in the coastal areas. This rock is made up of broken shells that are smaller in size. The rocks can be easily broken down by the constant flowing of sea waves.
This rock is commonly formed in the same way as the other sedimentary rocks, i.e. it is formed by the deposition of sediments carrying these organic remains and eventually undergoes the process of compaction and lithification on the seafloor.
Thus, the correct answer is option (C).
The correct statement is that Coquina rock is a form of a sedimentary rock. So, the correct option matching the statement above is C.
Coquina rock is basically formed of chemical compositions and living organisms, which are mostly formed near marine bio-diversities and marine conditions.
Sedimentary rocks Sedimentary rocks refer to such rocks which are formed due to the deposition of multiple layer of mineral or dead organisms on the surface of the Earth. As it is known that Coquina is formed by the deposition of seashells near the oceans, it can be said that coquina rocks are also a form of sedimentary rocks.Hence, the correct option is C, that Coquina rocks are a form of sedimentary rock. A reference image of coquina rock is attached below.
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_____ occurs at convergent boundaries, where one layer of crust sinks into the asthenosphere when it collides with another layer of crust.
A. Divergence
B. Weathering
C. Sublimation
D. Subduction
Answer: Subduction
Explanation:
Because it was in the lesson
Answer:
Option (D)
Explanation:
Two plates move towards one another in the case of a convergent plate boundary. Due to this, a subduction zone is created, where the heavier crust sinks below the lighter one. This zone of subduction is commonly identified by the presence of a narrow V-shaped depression known as deep-sea trench.
As the subducting denser plate reaches the layer of the asthenosphere, the rocks undergo partial melting, and the melt produced from it mixes with the magma. This magma eventually moves upwards to reach the surface in the over-riding plate giving rise to the formation of volcanoes.
The subduction zone and the oceanic trench are two of the common features present in the convergent plate boundary.
Thus, the correct answer is option (D).
Who was one of the founders of the location-sharing site Gowalla?
Answer:
One of the founders of Foursquare is Dennis Crowley. The other is Naveen Selvadurai. I know you didn't ask for both but I wanted to give them to you just in case. I hope this helps! (:
Explanation:
Dennis Crowley was one of the founders of the location-sharing site Gowalla.
Gowalla is a social networking application that is based on location. It first opened in 2007 and closed in 2012 before reopening on March 10, 2023. Users can check in at "Spots" in their immediate surroundings using either a specific mobile application or the mobile website. It announced the acquisition of Gowalla on December 2, 2011. Gowalla as a service was discontinued on March 11, 2012. According to Gowalla, another social media site will not be getting any of Gowalla's user data.
Dennis Crowley and Naveen Selvadurai founded it. For their first Gowalla check-in, a user receives a Newbie Badge. It encourages users to form societies in order to promote contact between them.
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Recognizing the need for organizations to improve the state of people, the planet, and profit simultaneously if they are to achieve sustainable, long-term growth is known as sustainability. social responsibility. the marketing concept. the triple bottom line.
Answer:
Corporate social responsibility (CSR) is the investment that companies voluntarily make to obtain improvements in their social, economic and environmental areas.
From the point of view of the marketing of the company, the investment is made to improve its competitiveness, since its image is strengthened as certain certifications are obtained, which is "sold" by the firm as added value.
The triple balance is the system by which the performance of the company in these areas is valued. Currently, there are numerous CSR evaluation systems, with standards that differ in accordance with the nature of the companies.
Explanation:
Hello!
According to the 1987 Bruntland report, sustainability implies "the satisfaction of current needs without compromising the ability of future generations to meet theirs".
Applied to companies, good performance in CSR seeks to maximize its economic benefit and its environmental responsibility, as well as minimize its negative externalities.
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At an astronomical conference, an astronomer gives a report on a star that has recently begun to interest astronomers because of hints that it may have a planet around it. In his report the astronomer gives the average speed with which this star is moving away from the Sun. How did the astronomer measure this speed?
By looking at the Doppler shift in the lines of the star's spectrum. T/F
Answer:
True
Explanation:
Hello!
Doppler spectroscopy is a measurement system used to estimate the radial velocity of a star.
To make this measurement, a series of observations are made on the spectrum of light emitted by a star. Then, it is detected if the characteristic wavelengths of the light spectrum vary, which may indicate that the radial velocity of the star varies. This situation can be caused by the presence of planets in the orbit of that star.
If a planet is found, it can determine its mass by studying the combinations in the radial velocity of the star.
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The GAIA spacecraft is capable of measuring parallax angles as small as about 0.00002 arcseconds (20 microarcseconds). Based on this fact, GAIA should in principle be able to measure the distances of stars located __________.
Answer:
It will be able to measure the distances of stars located across the Milky Way galaxy and outside it up to a distance of 50 Kiloparsec.
Explanation:
1 arcsecond is 1/parsec.
0.00002 arcsecond is 1/0.00002 parsec = 50,000 parsecs or 50 Kiloparsecs.
The shortest distance to the edge of the Milky Way is about 8 Kiloparsec and the farthest is about 24 Kiloparsec. So at this parallax angle, it can measure the distances of stars across the Milky Way galaxy. Any stars within a distance of 50 Kpc will be measured by GAIA. However, since the closest galaxy to the Milky Way is about 770 Kpc away, GAIA will be unable to measure any stars in another galaxy.
Final answer:
The GAIA spacecraft can accurately measure parallax angles as small as 20 microarcseconds, enabling measurement of stellar distances up to about 30,000 light-years away, far beyond the 300 light-year capability of its predecessor Hipparcos.
Explanation:
The GAIA spacecraft is an exceptional tool for measuring parallax angles to an incredible precision of about 20 microarcseconds, far exceeding the capabilities of its predecessor, Hipparcos. Given this precision, GAIA can measure the distances of stars much farther than ground-based observations could previously achieve. In particular, with an accuracy of a few microarcseconds, GAIA extends our ability to accurately measure stellar distances up to about 30,000 light-years away, covering nearly a third of the galactic disk. This is significantly further than the approximately 300 light-year extent possible with Hipparcos, illustrating GAIA's remarkable improvement in the field of astrometry.
Which of these hypothetical observations (none of them are real) would force us to reconsider our modern, Sun-centered view of the solar system?
A) We discover that the universe is actually contracting, not expanding.
B) We discover a small planet beyond Saturn that rises in the west and sets in the east each day.
C) We find that we are unable to measure any parallax for a distant galaxy.
D) We discover an Earth-sized planet orbiting the Sun beyond the orbit of Pluto.
Answer:
B.we discovers small planet beyond Saturn that rises in the west and sets in the east each day
Explanation:
If our earth rotates from west to east then all other heavenly bodies should rotate from east to west in our sky,so if saturn rotates in the opposite direction in the sky it poses a challenge in our believe of earth as a rotating planet
Read the article titled "Coastlines: Works in Progress." Using two or three sentences, describe the role of waves in shaping Earth's coastlines. (Site 1)
Answer: Waves through their nonstop action play a role in shaping the earth's coastline. This they achieve by their constant ability to move sands and gravel, breach barriers, build walls and even sculpt bays. As a result, no coastline ever remains the same for long.
Explanation: Coastlines are lines where land meets water. They constantly are changed and reshaped by waves built up by winds far out at sea, which unleash their energy when they break on the shore. They deliver sand and gravel to, move them along and also out of the beach.
This nonstop action means nothing ever stays the same. Breakers gnaw away at cliffs, shift sand to and fro, breach barriers, build walls, sculpt bays etc.
In any particular place on Earth, certain constellations are visible in the evening only at certain times of the year because _________.
A) during some times of year, some constellations drop below the southern horizon
B) some constellations are circumpolar
C) on any particular night, we can only see stars that are directly opposite (180 degrees away from) the Sun in the sky
D) our evening view of space depends on where Earth is located in its orbit around the Sun
Answer:
Option (D)
Explanation:
Constellation usually refers to the group of stars that forms a particular feature in the sky and which is visible at night. This is visible when the earth is located at the exact position from which it can be viewed. It often helps in the identification and location of the stars in space.
These constellations are visible from the earth when viewed in the evening, but only at particular times in a year. It is because the earth keeps on changing its position with respect to the sun. The earth goes around the sun in an elliptical orbit, and only at a few positions, with favorable conditions such as clear sky, these constellations are visible.
Thus, the correct answer is option (D).
Final answer:
Constellations are only visible during certain seasons because our view of space at night depends on Earth's position in its orbit around the Sun.
Explanation:
In any particular place on Earth, certain constellations are visible in the evening only at certain times of the year because our evening view of space depends on where Earth is located in its orbit around the Sun. As the Earth revolves around the Sun, the night sky changes, making different constellations visible at different times. In winter, for example, we can see constellations like Orion, while in summer, these constellations are not visible at night, because they are in the daytime sky, near the Sun.
The rotation and revolution of Earth cause various astronomical phenomena such as the changing visibility of constellations, the northern and southern circumpolar zones, and the unique experiences of star visibility at different latitudes. Therefore, the answer to the student's question is (D).
Stars and constellations that are circumpolar remain visible all year round for observers at certain latitudes. At the North Pole, for example, one would see certain constellations like the Big Dipper circle the sky parallel to the horizon, while others will never rise above the horizon. Similarly, at the equator, the celestial equator passes through the zenith, and stars rise and set perpendicular to the horizon.
Which events occur after Earth’s surface experiences weathering? Check all that apply. a. Sediments settle, forming a hill. b. Wind carries sediments to a new location. c. Sediments fall from the air to the ground. d. Moving water breaks sediments into pieces. e. Surface materials wear down into sediment.
Answer:
A, B, C
Explanation:
After the earth surface experience weathering, sediments are carried by the wind to new locations and these sediments fall from the sky and settle forming hills.
Answer:
Sediments settle, forming a hill.
Wind carries sediments to a new location.
Sediments fall from the air to the ground.
The sum total of the planet's living organisms and abiotic systems is ________.
a. the biosphere
b. an ecotone
c. the biomass
d. a biome
Answer:
a. the biosphere
Explanation:
The biosphere consists of both the living organisms and the non living(abiotic) system which they live in.
The age of our solar system is about: 1. one-third of the age of the universe.2. three-fourths of the age of the universe. 3. two billion years less than the age of the universe.
Answer:
1. one-third of the age of the universe
Explanation:
The solar system is about 4.571 billion years old whole the universe is about 13 billion plus.
The age of our solar system is around 4.6 billion years, roughly one-third of the estimated age of the universe.
Explanation:The age of our solar system is estimated to be around 4.6 billion years, which is approximately one-third of the estimated age of the universe at 13.8 billion years. This means that the solar system is significantly younger than the universe. While it can be difficult to grasp these vast time scales, we know these age estimates through several types of scientific evidence such as radiometric dating of rocks and the study of the oldest known celestial bodies.
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Ithilium, a European country, is able to produce more electronics than Kilim, a North American country, even though both countries use the same amount of resources. Given this information, it can be deduced that Ithilium has a(n):
Answer:
the answer is "absolute advantage"
Explanation:
Absolute advantage is a principle in economics. It is when Mr. A produces a higher quantity of goods/services than Mr. B using the same quantity of resources.
In this case, Ithilium produces more electronics than Kilim even both countries use the same amount of electricity.
Select all the answers that apply. Geological evidence of the age of the earth includes _____. a. radiometric dating of rocks b. fossil evidence c. comparative anatomy d. molecular clocks e. gradual processes of rock formation
Answer:
a. radiometric dating of rocks
Explanation:
Radiometric dating is a method used by geologists to date rocks by measuring the decay rate of radioactive isotopes when they lose energy. They basically quantify the unstable atoms left in rocks and compare them to the number of stable atoms.
I hope you find this information useful and interesting! Goos luck!
Answer:
radiometric dating of rocks
fossil evidence
gradual processes of rock
Explanation:
Radiometric dating confirms that Earth is ancient and explains how extremely slow processes can result in major changes to Earth’s surface. Evidence from radiometric dating indicates that Earth is about 4.54 billion years old. The geology or deep time of Earth's past has been organized into various units according to events that took place.
-The ages of Earth, Moon, and meteorites, radiometric dating has been used to determine ages of fossils, including early man, the timing of glaciations, ages of mineral deposits, recurrence rates of earthquakes and volcanic eruptions, the history of reversals of Earth's magnetic field, and the age and duration of a wide variety of other geological events and processes.
_________________________________________________________
here I just explained why the correct answer is radiometric dating of rocks, fossil evidence, gradual processes of rock, good luck, Let me know if I am wrong, and BRAINLIEST?
How far north you live from the equator is measured as your ________, whereas an imaginary line marking all those places at that same distance north of the equator is called a ________.
Answer:
LATITUDES AND PARALLEL
Explanation:
Latitudes are the lines that are oriented in the east-west direction and are measured from the equator moving towards both the poles. It ranges from 0° to 90°, where 0° refers to the equator and 90° refers to both the poles on either side. This latitude together with the value of longitude gives the exact coordinates of a location on earth.
Parallels are the imaginary lines joining all the places lying on the same latitude. These are the lines oriented in the east-west direction. These lines are extended in both the hemisphere, maintaining a fixed distance from the equator.
The distance north you live from the equator is measured as your latitude, while the imaginary line running east-west at that same distance north from the equator is called a parallel.
Explanation:How far north you live from the equator is measured as your latitude, whereas an imaginary line marking all those places at that same distance north of the equator is called a parallel. Latitude is a geographical coordinate that specifies the north-south position of a point on the Earth's surface. It ranges from 0 degrees at the equator to 90 at the poles. On the other hand, parallels are imaginary lines running east-west around the globe, parallel to the equator, that indicate latitude.
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When we say that a planet has a highly eccentric orbit, we mean that (a) it is spiraling towards the Sun (b) its orbit is an ellipse with the Sun at one focus (c) in some parts of its orbit it is much closer to the Sun than in other
Answer:
(c) in some parts of its orbit it is much closer to the Sun than in other.
When a planet has a highly eccentric orbit, it means that its orbit is an ellipse with the Sun at one focus. In some parts of its orbit, the planet is much closer to the Sun than in others.
Explanation:When we say that a planet has a highly eccentric orbit, it means that its orbit is an ellipse with the Sun at one focus. In other words, the planet's orbit is stretched out into an elongated shape.
The eccentricity of an orbit describes how elongated or circular it is. If a planet has a highly eccentric orbit, it means that there is a significant difference in its distance from the Sun at different points in its orbit. In some parts of its orbit, the planet will be closer to the Sun, while in other parts it will be farther away.
For example, Pluto has a highly eccentric orbit. At some points in its orbit, it is much closer to the Sun than at others.
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True or false plants in a high latitude receive less direct solar energy during the year than plants at a lower latitude because they are farther from the equator
True. Plants in higher latitudes receive less direct solar energy throughout the year due to the curvature of the Earth and the angle at which sunlight reaches the surface.
Do plants in a high latitude receive less direct solar energy during the year than plants at a lower latitude because they are farther from the equatorAs you move towards higher latitudes from the equator, the angle at which sunlight reaches the Earth's surface becomes more oblique. This causes the same amount of solar energy to be spread over a larger area, leading to lower intensity of sunlight.
This is why plants in high latitudes receive less direct solar energy over the course of the year compared to plants closer to the equator.
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Sea stars are broadcast spawners: They release their gametes into the water without courtship. Which of these reproductive isolation mechanisms is most likely affecting sea stars?
a. behavioral isolation or mechanical isolation
b. gametic isolation or temporal isolation
c. habitat isolation
Answer:
b. gametic isolation or temporal isolation
Explanation:
Gametic isolation is a type of prezygotic barrier where the gametes (egg and sperm) come into contact, but no fertilization takes place.
Temporal isolation - separation in time such that reproduction occurs at different times of the day, or season or even years. For example, consider the time of day when Evening primrose or Morning glory flowers. The Western spotted skunk mates late summer, whereas the eastern spotted skunk mates in late winter.
What is the graticule? a. another name for a map projection b. the name given to Earth’s latitude lines c. another name for a globe the name given to Earth’s longitude lines d. a name given to the system of lines used to locate points on Earth’s surface
Answer:
I would say D. a name given to the system of lines used to locate points on earths surface
Explanation:
A quick google search of a graticule explained that it is a network of lines representing meridians and parallels on which a map or plan can be represented.
The graticule is a name given to the system of lines used to locate points on Earth’s surface. It consists of latitude lines (parallels) and longitude lines (meridians). The graticule is important for navigation and determining coordinates.
Explanation:The graticule is a name given to the system of lines used to locate points on Earth’s surface. It consists of the latitude lines (also known as parallels) which run horizontally around the Earth and the longitude lines (also known as meridians) which run vertically from the North to the South pole. The graticule is an important tool for navigation and determining the coordinates of specific locations on the Earth.
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This type of air neither rises on its own following an initial lift nor sinks back to its original level.
A. statically neutral air
B. statically unstable air
C. statically stable
D. none of these types of air rises on its own following an initial lift nor sinks back to its original level
Answer:
A. statically neutral air
Explanation:
A statically neutral air will not to rise on it's own given an initial upward displacement or sink bank to it's original level
Motion on _________ faults results in a fault scarp?
Answer:
Reverse fault, Dip-Slip fault, Normal fault, Thrust fault
Explanation:
A Fault scarp is usually defined as a step-like feature that occurs on the ground surface, depicting the movement of one block upward relative to the other, along a fault line.
It is caused by the following types of faults, namely:
Reverse fault Dip-Slip fault Normal fault Thrust faultThe reverse and the thrust faults are formed due to the compressional stress acting on it from both sides, resulting in the movement of the blocks along the fault line creating a fault scarp.
Similarly, the normal fault and the Dip-slip fault also generates a fault scarp, where the fault is formed because of the extension of the crust.
Answer:Normal fault
Explanation:
Earthquakes, volcanoes, and landslides can displace large volumes of water in the ocean and trigger which of the following natural disasters? a. Mass wasting b. Tsunamis c. Lahars d. Tornadoes
Answer: B Tsunamis
Explanation: tsunami is generated by displacement of large volume of water which the causes of the displacement can be earthquake, volcanoes, landslide and other underwater explosion. Tsunami is refered to as tidal waves
Since we know the difference in height between these two locations, using the atmospheric lapse rate equation provided above, predict the temperature difference between the two locations. (Pay attention to units!. Round to 2 decimal places)
Answer: a) Difference between the two mean temperatures = 16°C
b) The temperature difference between the two locations, according to the lapse rate equation is 23.45°C
c) The true temperature difference is lower than that predicted by the temperature lapse rate formula.
Explanation: a) Difference between the two mean temperatures = 25 - 9 = 16°C
b) The environmental lapse rate (ELR), is the rate of decrease of temperature with altitude in the stationary atmosphere at a given time and location.
The atmospheric temperature lapse rate as defined by the International Civil Aviation Organization (ICAO) for an International Standard Atmosphere is = 6.5°C/km
For this question, distance between the two points is 3613 m = 3.613 km
Temperature difference = 6.5°C/km × 3.613km = 23.45°C.
c) The true difference, 16°C, is less than the predicted difference, 23.45°C.
QED!
If a single disturbance at an unknown distance emits both transverse and longitudinal waves that travel with distinctly different speeds in the medium, such as in the ground during an earthquake, how can the distance to the disturbance be determined?
Answer:
Explanation:
If the differences in the time of arrival of each wave is measured, the distance can be calculated. The more the difference in their time of arrival, the more the distance and this distance can be in any direction. If distance is used as the radius on the circle that will mean that the disturbance must have taken place on the circle.
If you place a telephone call to two people with similar measurements about this same event at different places, then their circles can be transfered to your own map, the point of intersection of this 3 circles is the location of disturbance.
Final answer:
To calculate the distance to the source of an earthquake, seismographs use the time difference between the arrival of P-waves and S-waves. The distance can be precisely determined given the speeds of these waves and the precision of timing measurement. Uncertainties in the wave speeds can affect the accuracy of this distance calculation.
Explanation:
To determine the distance to the disturbance, such as the epicenter of an earthquake, seismographs measure the arrival times of P-waves and S-waves with a high precision. Because these waves travel at different speeds through the medium, the time difference in their arrival can be used to calculate the distance to the source of the earthquake.
The formula for the distance D to the earthquake's epicenter is based on the measured time difference
Dt between the arrival of the P-waves and S-waves and their respective speeds Vp for P-waves and Vs for S-waves:
D = Vp * (Dt) / (1 - Vs/Vp)
Given the precision of time measurements (0.100 s) and the known speeds of P-waves (7.20 km/s) and S-waves (4.00 km/s), one can solve for D to find the distance to the epicenter with a certain level of precision. However, any uncertainties in the speeds of the seismic waves would contribute to a greater uncertainty in the determined distance.
In practical terms, this difference in arrival times provides a way to triangulate the location of an earthquake's epicenter or the site of underground nuclear detonations, which is crucial for geological studies and for monitoring compliance with test ban treaties.
Undulations in the upper (higher elevation)air of the Westerlies are called jet stream disturbances, or _________, and are responsible for bringing variable warm & cold temperatures to mid-latitude (45 degrees and thereabouts) landmasses.
Answer:
Rossby waves
Explanation:
Rossby waves are upper-air waves troposhpere they usually have a wavelengths of range from 4000-6000. Rossby waves are large body of air with fairly uniform charactersitics of temperature and moisture.
The volcanic landforms at divergent ocean plate boundaries are _____. A. volcanic island arcs B. ocean trenches C. continental volcanic arcs D. oceanic ridges
D.
The volcanic landforms at divergent ocean plate boundaries are _oceanic ridges____.
Explanation:
As two tectonic plates move away from each, they leave a vacuum in between the two plates. This vacuum is filled by upwelling magma from the mantle. As the upwelling magma cools it forms a mountainous ridge along the boundary – because the magma cools rapidly before it could spread further out on the surface. Examples of these landforms are the Mid-Atlantic Ridge and the East Pacific Rise located at divergent tectonic boundaries.
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Answer: The answer to your questions is D. oceanic ridges I hope this helps :)
When a metamorphic rock exhibits a layered or banded appearance, it is said to exhibit a(n) __________ texture.
Answer:
Explanation:
When a metamorphic rock exhibits a layered or banded appearance, it is said to exhibit a foliated texture.
In geology, foliation texture is a texture that has layerings in a repititive manner, usually in metamorphic rocks. Each layer vary in thickness. It can be as thin as 0.05cm or more than a meter in thickness.
In the following list of magmas, only one is likely to explode - the others will produce lava flows or spatter to form small cinder cones or ooze out to form lava domes. Which one of the following magmas is most likely to produce an explosive volcanic eruption when it reaches the Earth's surface?
a. A basaltic magma with gas.
b. A basaltic magma without gas.
c. An andesitic magma with gas.
d. A rhyolitic magma without gas.
Answer:
C. An andesitic magma with gas
Explanation:
Andesitic magma are characterised by high gas content allowing them to explode explosively when they reach the surface.