What does a marine fossil in a desert tell scientists?


A. The desert was always a desert.


B. The area was once under water.


C. Marine life once lived on land.


D. Marine fossils cannot be found in a desert.

Hydraulic fracturing, or fracking is drilling method used to extract Petroleum ( oil ) or Natural Gas from deep in earth. Fracturing is used to simplify the extraction of oil and natural gas in porous and permeable rock     by stimulating the flow of fluid.

Since unconventional oil and natural gas is often trapped inside porous and rocks with low permeability such as shale. Pathway must be manually created for the fluids to flow through the rocks and into the wells. Before the widespread use of hydraulic fracturing drilling companies would drill several wells into the rocks in an attempt to free the oil and gas trapped within it. This method  is not efficient as the wells ae still not able to cover a large volume of rocks . Hydraulic fracturing is a solution to this platform and is done after the drilling process.

To fracture the well , a fluid known  as fracking  fluid is pumped into  a wellbore  creating enough pressure to fracture the rock . This fluid is mostly water containing chemicals and sand. The sand in the fluid is known as a proppant and holds the crack open so that oil and gas  can escape.

The injection of this fluid breaks  a small amount of the rock that surrounds each other. This then increases the volume of rock that gas or oil can be extracted.

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New Orleans is particularly vulnerable to hurricane damage because its elevation is below sea level. This makes it more susceptible to flooding from storm surges during hurricanes. Additionally, the Mississippi River and other surrounding bodies of water can contribute to increased flooding during such events.

New Orleans is particularly vulnerable to hurricane damage because its elevation is below sea level. Additionally, the city is located near the coast and the Mississippi River, which can result in storm surges and flooding during hurricanes. Despite experiencing hurricanes in the past, the city's levee walls were not strong enough to withstand the force of Hurricane Katrina in 2005, resulting in widespread devastation and loss of life.

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Answer:

The scientist should study the pattern extensively and try as much as possible to be able to describe and predict some of the features of the pattern. He then should make this known to the science world to encourage research into this new field of study.

Explanation:

Discovery is the dream of all scientist. Science is the probe of nature in order to seek and be able to explain and predict a pattern in nature. Discovering a pattern either by probe or by mere coincidence triggers an extensive research and experimentation in this new field. A scientist therefore should make a new discovery know as this not only furthers the advancement of knowledge, but also puts down his own name in history and also lots of immediate recognition.

As the pressure on the rock decreases, the rock's melting temperature, or decompression melting, decreases.

Option c is correct .

Vacuum melting is the process by which rock is melted by a reduction in pressure. It forms when rocks that were originally under high pressure inside the Earth rise to shallow depths or are brought to the surface. As the pressure on the rock decreases, the melting temperature of the rock also decreases.

This pressure drop also allows rocks to melt at lower temperatures than would be expected from their composition alone. Adding water to rocks lowers the rock's melting temperature. This refers to the flux dissolution process, adding water can lower the dissolution temperature of rocks. However, this is not specifically related to vacuum lysis.

Option , Option c is correct .

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Answer:

Droughts have an impact on water resources and agriculture production, cause soil erosion, reduce carbon sequestration and overall contribute to land degradation.

The division of land results in the formation of an ocean basin. On the other hand, a mid ocean ridge, often referred to as a spreading center, would develop if two oceanic plates diverged.

There is a diverging border formed when two tectonic plates separate. Earthquakes regularly happen at these boundaries as magma (molten rock) rises from the Earth's mantle to the surface and solidifies to form new oceanic crust.

At this stage, two plates begin to slip apart. Rock from the mantle erupts along the opening, forming new crust. Minor earthquakes frequently occur in these spreading centers, also known as zones.

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Answer:

The answer is 2 - solar power plant

Answer:

B.

Canadian Shield

Explanation:

Nothing time only changes when you move east or west.

Answer:

whats the answer choices?!?!?!?!?!?!?!?!?!?!

Explanation:

Answer:

The plate boundary is a convergent one where a subduction zone is created.

Explanation:

The Andes are the longest and highest mountain chain in South America, and among the largest ones in the world as well. It is a mountain chain created because of the collision between two tectonic plates and the process is still not over, so the Andes are still growing in size and elevation.

The plates that collide are the Nazca Plate (not the Pacific as it is stated in the question) and the South American plate. The Nazca Plate is a smaller plate and it is mostly made up of oceanic crust, while the South American plate is much larger and is mostly made up of continental crust. The lower and denser Nazca plate moves below the South American plate, thus it subducts, and as it does so, the crust near the plate boundary is pushed up, creating a mountain chain, in this case, that being the Andes.

The amount of gravitational potential energy released as an object falls depends on its mass, the distance it falls, and the acceleration of gravity.

Gravitational potential energy is the energy an object possesses due to its position relative to the ground. As an object falls, it loses potential energy and gains kinetic energy due to its motion. The potential energy that is converted into kinetic energy is dependent on the mass of the object and the acceleration of gravity. Additionally, the distance the object falls also plays a role in the amount of potential energy that is released. Therefore, the correct option is "its mass, the distance it falls, and the acceleration of gravity."

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Answer:

North Atlantic

Explanation:

The most recently formed part of the Atlantic Ocean is the South Atlantic.
C. South Atlantic

Through its separation from Africa, Europe, and Asia from the Americas, the Atlantic Ocean has played a central role in the development of human society, globalization, and the histories of many nations.

While the Norse were the first known humans to cross the Atlantic, it was the 1492 expedition of Christopher Columbus that proved to be the most consequential. Columbus's expedition ushered in an age of exploration and colonization of the Americas by European powers, most notably Spain, France, Portugal, and the United Kingdom. From the 16th to 19th centuries, the Atlantic Ocean was the center of both an eponymous slave trade and the Columbian exchange while occasionally hosting naval battles. Such naval battles, as well as growing trade from regional American powers like the United States and Brazil, both increased in degree during the 20th century and while no major military conflicts took place in the Atlantic in the present 21st century, the ocean remains a core component of trade across the world.

The Atlantic Ocean occupies an elongated, S-shaped basin extending longitudinally between Europe and Africa to the east, and North and South America to the west. As one component of the interconnected World Ocean, it is connected in the north to the Arctic Ocean, to the Pacific Ocean in the southwest, the Indian Ocean in the southeast, and the Southern Ocean in the south (other definitions describe the Atlantic as extending southward to Antarctica). The Atlantic Ocean is divided in two parts, by the Equatorial Counter Current, with the North(ern) Atlantic Ocean and the South(ern) Atlantic Ocean split at about 8°N.

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Answer:

middle I believe? I'm not 100% sure on that

Explanation:

The statement that does NOT correctly describe current population trends is D. "The primary reason for the decrease in population growth rates around the world is a rise in the death rate associated with an increase in civil wars."

Option D incorrectly associates the decrease in population growth rates with a rise in the death rate caused by an increase in civil wars. In reality, the primary factors contributing to the decline in population growth rates globally are decreasing birth rates and increasing access to education and healthcare, particularly in developing countries.

The decrease in birth rates is attributed to various factors such as improved contraception methods, women's empowerment, and socioeconomic development. While civil wars and conflicts can certainly impact population dynamics and cause casualties, they are not the primary reason for the overall decrease in population growth rates observed worldwide.

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Answer:

I can't see make it bigger honey

Explanation:

Answer:

Tourist attractions for Africa

Explanation:

It's not things that affect the economy, and it's not the reason diseases spread. Those are landforms, so they aren't the effects of colonization, so it's tourist attractions.

A possible limitation of comparing Image 1 and Image 2  is that:

The landscapes of New York City and Tokyo are impacted by assimilation, which occurs when individuals of one cultural group adopt the behaviors of another group while retaining some of their own characteristics.

Since there are no accepted scientific definitions of race or ethnicity, these factors are challenging to measure. Many wonder if significant comparison research can be conducted without a common scientific definition when there is so much room for classification error.

Therefore, an element  of ethnic identity is the sense of ethnic group membership. Different metrics can be used to assess ethnic identification. Simply asking a responder about their affiliation with the dominant group and their ethnic group is one way to collect data.

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Answer:

To determine which recording station is farther away from the epicenter, we need to understand how seismic waves travel. There are two types of seismic waves: primary waves (P-waves) and secondary waves (S-waves).

P-waves travel faster than S-waves, so they arrive at the recording station first. By measuring the time difference between the arrival of the P-waves and the S-waves at each recording station, we can calculate the distance to the epicenter.
Assuming that both recording stations are equidistant from the epicenter, the station that receives the seismic waves later would be farther away. This is because the waves would have traveled a longer distance to reach that station, resulting in a longer delay between the arrival of the P-waves and the S-waves.
Therefore, we need more information about the arrival times of the seismic waves at each recording station to determine which one is farther away from the epicenter.

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Sedimentary rocks are formed from the deposition and consolidation of rock fragments and organic particles, both on and beneath the surface of the earth. Shale, conglomerate, siltstone, and sandstone are the four main types of sedimentary rocks.

Among these four rocks, sandstone has the largest grain size, as it is made up of large sand grains. Sedimentary rocks are formed through the process of lithification. It is a process in which loose sediments are converted into solid rocks due to compaction and cementation. The size of the grains depends on the type of rock and the environmental conditions in which it was formed.

Sandstone is a type of sedimentary rock made up of sand-sized grains. It forms when sand is deposited and compacted into solid rock by natural forces. Sandstone has a rough texture and is resistant to weathering, making it a popular building material.

Shale is a fine-grained sedimentary rock formed from clay and silt-sized particles. It is the most abundant sedimentary rock and is formed from the deposition of fine-grained sediments. Shale has a fine-grained texture and is often used in construction.

Siltstone is a type of sedimentary rock that is made up of silt-sized grains. It is finer than sandstone but coarser than shale. Siltstone has a smooth texture and is used in construction, especially for decorative purposes. Conglomerate is a type of sedimentary rock that is made up of large, rounded fragments of other rocks. It is formed from the deposition of boulders, gravel, and pebbles. Conglomerate has a rough texture and is used in construction and as a decorative material.
Thus, sandstone has the largest grain size among the four types of sedimentary rocks.

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Greek country with 8,500 miles of coastline in the Mediterranean. The Mediterranean Sea and seven Member States make up this biogeographical region, either partially (France, Portugal, Italy, and Spain) or completely (Greece, Malta, and Cyprus).

Countries in the Mediterranean are those that are part of the Mediterranean Basin or surround the Mediterranean Sea. The sea itself is bordered by twenty sovereign nations in the regions of Western Asia, North Africa, and Southern Europe, as well as by two island nations that are entirely within it (Malta and Cyprus).

A brief overview of 22 nations 22 nations share a 46 000-kilometer coastline with the Mediterranean Sea, which is the largest of the semi-enclosed European seas. Additionally, it is home to approximately 480 million people who live on three continents: Asia, Europe, and Africa.

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The change in the atmosphere that the student has most likely observed is the passage of a warm front.

A warm front is a transition zone between a mass of warm air and cooler air. As a warm front approaches, the sky tends to become increasingly cloudy due to the rising warm air condensing and forming clouds. The gentle yet steady rain is a common characteristic of a warm front, as the warm air rises over the cooler air and cools, leading to the formation of precipitation.

Following the passage of a warm front, the skies typically clear as the warm air mass replaces the cooler air mass. This can result in warmer than average temperatures being recorded, as the warm air dominates the area.

Based on the observations of increasingly cloudy skies, steady rain, clearing skies, and warmer temperatures, it aligns with the characteristics of a warm front passing through the student's location.

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The three largest metropolitan areas in the United States, listed in order of population, are:

New York City Metropolitan Area: This area includes the five boroughs of New York City (Manhattan, Brooklyn, Queens, The Bronx, and Staten Island), as well as surrounding counties in New York, New Jersey, and Connecticut. It is the most populous metropolitan area in the United States.

Los Angeles Metropolitan Area: This area encompasses Los Angeles County and several other counties in Southern California. It includes cities like Los Angeles, Long Beach, Anaheim, and Santa Ana. The Los Angeles Metropolitan Area is the second most populous metropolitan area in the United States.

Chicago Metropolitan Area: This area includes Chicago, the third-largest city in the United States, as well as surrounding counties in Illinois, Indiana, and Wisconsin. The Chicago Metropolitan Area is the third most populous metropolitan area in the United States.

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The maritime economy in the United States generates $282 billion in goods and services, and about three million people are employed by industries reliant on the ocean. Food: The ocean offers more than just seafood; it also contributes to the ingredients of unexpected dishes like peanut butter and soymilk. he relief features of an ocean floor is shown in the attachment below:

The ocean is essential to the world's economy since more than 90% of trade uses maritime routes, and it provides essential ecosystem services in addition to playing a significant role in regulating the climate and weather and supporting millions of people with jobs.

5 reasons why the ocean is very crucial:

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The Chacoans, the native people of Chaco Canyon, had an astute understanding of the natural world and the changing of the seasons.

They were conscious of the equinoxes and the solstices and used the position of the sun to determine the beginning and end of their agricultural seasons. A sun dagger was used to mark the passing of these important dates. They marked the summer solstice by piercing the rock with a narrow beam of sunlight that fell directly onto a spiral petroglyph.

The winter solstice was marked by two daggers of sunlight, which intersected to form an X on a nearby petroglyph. The position of the sun is still one of the most reliable signs of the changing seasons today. In the Northern Hemisphere, the summer solstice falls around June 20 or 21, marking the beginning of summer, and the winter solstice falls around December 21 or 22, marking the beginning of winter.

The spring and autumnal equinoxes, which mark the beginning of spring and autumn, occur around March 20 or 21 and September 22 or 23, respectively.

Daylight hours also shift during these times, with the longest day occurring on the summer solstice and the shortest on the winter solstice. Many people also use natural signs such as blooming flowers and migrating birds to indicate the changing seasons, as well as temperature changes and weather patterns.

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Answer:

Vesuvius and St. Helens, have many traits in common. For example, when these two volcanoes erupted, they both made a huge ash cloud. Also, they both began with harmonic tremors, which are small earthquakes, that includes the venting of gases from the magma of volcanoes.

Explanation:

The lower atmosphere and hydrosphere are bound to the earth by gravity.

Gravity is a fundamental interaction that causes all things with mass or energy to be attracted (or gravitate) toward one another.

Gravity is by far the weakest of the four fundamental interactions, approximately 1038 times weaker than the strong interaction, 1036 times weaker than the electromagnetic force and 1029 times weaker than the weak interaction.

However, gravity is the most significant interaction between objects at the macroscopic scale, and it determines the motion of planets, stars, galaxies, and even light.

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Protection of the embryo in maternal tissue. While this adaptation may be seen in some animals, it is not a plant adaptation to life on land specifically.

The answer is B.

While plants may contain cells with the same protective qualities as an embryo in maternal tissue, this trait does not necessarily arise as a result of evolution on land specifically.

Other plant adaptations for living on land include the ability to undergo photosynthesis, the development of flowers, the presence of vascular tissue, and the production of seeds. These adaptations are essential for plants to survive on land.

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(a) (i) Using the old North American dose standards, the anticipated Dose percentage ≈ 1.26%

(ii) Using the European dose standard, the anticipated Dose percentage ≈ 3.14%

(b) 8-hr Leq for the employee = 68.125 dB(A)

(c) Compliance with standards:

(i) Old North American standard: The environment passes the requirements of the old North American standard.

(ii) European standard:

The European standard sets the maximum permissible exposure at 87 dB(A) for an 8-hour workday.

To calculate the anticipated Dose percentage, 8-hr Leq, and determine if the environment passes or fails the standards, we need to perform the following calculations and comparisons:

(a) Anticipated Dose Percentage:

(i) Using the old North American dose standards:

The old North American dose standard states that the maximum permissible exposure for an 8-hour workday is 90 dB(A). To calculate the dose percentage, we need to compare the time-weighted average (TWA) noise exposure to the maximum permissible exposure. We'll calculate the TWA using the given Leq values and durations for each activity:

TWA = ((Duration1 * Leq1) + (Duration2 * Leq2) + ... + (DurationN * LeqN)) / Total Duration

Total Duration = 8 hours = 480 minutes

Duration1 = 30 minutes = 0.5 hours

Leq1 = 45 dB(A)

Duration2 = 90 minutes = 1.5 hours

Leq2 = 90 dB(A)

Duration3 = 15 minutes = 0.25 hours

Leq3 = 60 dB(A)

Duration4 = 60 minutes = 1 hour

Leq4 = 90 dB(A)

Duration5 = 15 minutes = 0.25 hours

Leq5 = 60 dB(A)

Duration6 = 105 minutes = 1.75 hours

Leq6 = 90 dB(A)

Calculating the TWA:

TWA = ((0.5 * 45) + (1.5 * 90) + (0.25 * 60) + (1 * 90) + (0.25 * 60) + (1.75 * 90)) / 8 = 545 / 8 ≈ 68.125 dB(A)

Dose Percentage = 100 * (TWA / 100)^(1.5 - 90) = 100 * (68.125 / 100)^(1.5 - 90) ≈ 1.26%

(ii) Using the European dose standard:

The European dose standard sets the maximum permissible exposure at 87 dB(A) for an 8-hour workday. We'll perform the same calculations as above, but compare the TWA to 87 dB(A) instead:

TWA = 68.125 dB(A) (calculated above)

Dose Percentage = 100 * (TWA / 100)^(1.5 - 87) = 100 * (68.125 / 100)^(1.5 - 87) ≈ 3.14%

(b) 8-hr Leq for the employee:

The 8-hour Leq represents the equivalent continuous noise level over an 8-hour workday. We can calculate it using the same formula as the TWA:

8-hr Leq = TWA = 68.125 dB(A) (calculated above)

(c) Compliance with standards:

(i) Old North American standard:

The old North American standard sets the maximum permissible exposure at 90 dB(A) for an 8-hour workday. Since the 8-hr Leq is 68.125 dB(A), which is below the maximum permissible exposure, the environment passes the requirements of the old North American standard.

(ii) European standard:

The European standard sets the maximum permissible exposure at 87 dB(A) for an 8-hour workday. Since the 8-hr Leq is 68.125 dB

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