The fish-eating bird species that has made a comeback since the ban on DDT is the bald eagle.
From the 1940s to the 1970s, the chemical compound DDT was frequently used as a pesticide in the US. It caused the eggshells of bald eagles and other bird species to become thin and brittle, which prevented them from having offspring.
The bald eagle population, which had been steadily dropping for decades, had a considerable resurgence after DDT was outlawed in the early 1970s.
As of today, there are about 10,000 nesting pairs of bald eagles in the United States, up from a low of less than 500 nesting pairs in the lower 48 states in the 1960s. This recovery is regarded as a significant achievement for the protection of endangered species.
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by what primary heat transfer mechanism does the sun warm the earth? by what primary heat transfer mechanism does the sun warm the earth? radiation convection all of the above processes are equally important in combination. conduction
The primary heat transfer mechanism by which the sun warms the earth is radiation.
This is because the sun emits electromagnetic waves that travel through the vacuum of space and reach the earth's atmosphere. These waves are absorbed by the earth's surface and atmosphere, which causes heating. While conduction and convection also play a role in the heat transfer process, they are not as important as radiation in this case.
However, it is important to note that all of these processes work together in combination to maintain the earth's temperature and climate. Overall, the sun's radiation is the main driving force behind the heating of the earth.
The primary heat transfer mechanism by which the sun warms the Earth is radiation. In this mechanism, energy is transferred through electromagnetic waves, such as visible light and infrared radiation. Unlike conduction and convection, radiation does not require direct contact or a medium to transfer heat, making it the dominant method for heat transfer between the sun and the Earth. While conduction and convection may play roles in other heat transfer processes, it is radiation that is essential in the sun-Earth energy exchange.
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The Albemarle-Pamlico sound is part of the second largest estuary system in the US. What is the largest?
The Chesapeake Bay is the largest estuary in the United States and the third largest in the world.
The Potomac, Susquehanna, and James rivers are just a few of the more than 150 rivers and streams that feed this body of water on the East Coast of the United States.
The area of the Chesapeake Bay, which spans six states, is about 4,479 square miles. Many different plant and animal species, as well as a number of migratory bird and fish species, depend on it as a habitat.
The Chesapeake Bay also contributes significantly to the local economy by serving as a hub for tourism, recreational activities, and the commercial and recreational fishing industries.
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According to the CRB article, what caused the Chowan River to be declared "dead" in 1972?
The Chowan River was not declared "dead" in 1972. In fact, the Chowan River is a vital part of the ecology and economy of northeastern North Carolina.
The Chowan River, like many other waterways in the country, has had to deal with a number of environmental issues over time, such as pollution from industrial waste and agricultural runoff. By lowering water quality, killing fish and other aquatic life, and causing toxic algae blooms, these contaminants can damage aquatic ecosystems.
The Chowan River and other local waterways' water quality has recently been improved through various initiatives.
The Chowan River Basin Restoration and Enhancement Project, for instance, is a collaboration between state and federal agencies, non-profit groups, and local communities that aims to protect and restore wetlands, lessen agricultural runoff, and encourage sustainable land use methods throughout the basin
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why are precipitation totals low in polar climates, and which season has the most precipitation? why are precipitation totals low in polar climates, and which season has the most precipitation? the amount of water vapor in the air is always small because high-mixing ratios must accompany low temperatures. thus, usually precipitation is most abundant during the warmer summer months. the amount of water vapor in the air is always small because low-mixing ratios must accompany low temperatures. thus, usually precipitation is most abundant during the cooler winter months. the amount of water vapor in the air is always great because low-mixing ratios must accompany low temperatures. thus, usually precipitation is most abundant during the warmer summer months. the amount of water vapor in the air is always small because low-mixing ratios must accompany low temperatures. thus, usually precipitation is most abundant during the warmer summer months. the amount of water vapor in the air is always small because low-mixing ratios must accompany high temperatures. thus, usually precipitation is most abundant during the warmer summer months.
Precipitation totals are generally low in polar climates because the air is very cold and has a low capacity to hold moisture.
What happens with precipitationThe amount of moisture present in the air is greatly hindered by both the limited water vapor, as well as the low temperatures that are common in polar climates, which results in lower mixing ratios.
Considering which season usually brings the most precipitation to these chillier locales varies depending on where you are, yet as a whole more moisture can be anticipated during warmer moments when the air has more potential to hold what it needs. In certain parts of the Polar regions, summertime offers up the heaviest downpours, while in other areas spring and fall might bear the weight of the moistest forays.
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which type of biome would you expect to find in areas where it is always moist and the temperature does not vary across the seasons?please choose the correct answer from the following choices, and then select the submit answer button.answer choicestropical rain foreststropical seasonal forestsdesertstemperate grasslandssavannas
The correct answer is tropical rain forests. Tropical rainforests are a type of biome characterized by high rainfall and constant high temperatures throughout the year.
They are located in areas near the equator and are home to a diverse range of plant and animal species. Biomes are large geographical areas with similar climate, vegetation, and animal life. Tropical rainforests are one of the many biomes found on Earth.
In areas where it is always moist and the temperature does not vary across the seasons, you would expect to find the tropical rainforest biome. Tropical rainforests are a type of biome characterized by high rainfall, consistent temperatures, and abundant plant and animal life. Biomes are large ecological areas on Earth's surface, defined by their characteristic climate, flora, and fauna.
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which of the following statements about movement in midlatitude cyclones are accurate?choose all that apply.
Answer:
clockwise
Explanation:
Convergent boundaries are areas of...
(A) compressional forces that crunch the crust and generate a spreading center.
(B)plate collision.
(C)tensional forces that stretch the crust and generate a spreading center.
(D)crustal formation.
Convergent boundaries are areas of plate collision.
Convergent boundaries describes the boundary between two plates. The boundaries of either of the colliding plates may collapse upward into mountain ranges or downward into a deep underwater trench as a result of the collision. Strong earthquakes regularly strike around convergent plate borders, where a chain of volcanoes frequently occurs. Think of the Pacific Ring of Fire as an instance of a plate that converges boundary.
Near the borders of convergent plate boundaries, oceanic crust is frequently forced into the mantle and begins to melt. As magma goes up into and through the other plate, granite, the rock that creates the continents, is formed. Therefore, at convergent boundaries, oceanic and continental crust are destroyed.
Therefore, option B is the correct answer.
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How old is the millpond at Merchants Millpond State Park?
The millpond at Merchants Millpond State Park is estimated to be over 190 years old, dating back to the early 1800s.
The North Carolina Birding Trail includes Merchants Millpond State Park, which is well-known for its potential for birding, although the CRB article does not specify the precise number of bird species that may be found there.
According to the Chowan River Basin article, a group of local residents known as the Chowan Basin Task Force was formed in the 1990s to address concerns about the health of the river.
Numerous bird species are drawn to the park's diverse habitats, which include cypress-gum swamps, mixed pine-hardwood forests, and open water. Barred owls, big egrets, and prothonotary warblers are a few of the birds that are frequently seen in the park.
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Why are igneous and some metamorphic rock used for isotopic dating and not sedimentary rock?
Igneous and some metamorphic rocks are used for isotopic dating because they contain minerals that are capable of retaining isotopic age information, while sedimentary rocks typically do not.
Igneous rocks form from the cooling and solidification of magma or lava, which typically contain isotopes of elements like uranium, potassium, and rubidium. When these minerals crystallize and solidify, they lock in the isotopic composition of these elements. Metamorphic rocks, which form from the alteration of existing rocks due to heat and pressure, may also contain isotopic age information if they contain minerals that have not been reset by subsequent heating or deformation.
Sedimentary rocks, on the other hand, typically form from the accumulation and cementation of particles or organic matter. The minerals in sedimentary rocks have often been transported from other sources and may have a different isotopic composition than the original source rock. Additionally, sedimentary rocks are more likely to have been subject to weathering, erosion, and other processes that can alter or reset isotopic age information. As a result, isotopic dating is generally not as reliable for sedimentary rocks as it is for igneous and some metamorphic rocks.
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Which of the following activities is most directly related to the dead zones in the Gulf of Mexico just west of the Mississippi River?
A) Extensive shrimp fishing
B) Barge traffic on the Mississippi River
C) Farming in the Midwest
D) Burning coal to generate electricity in the Midwest
Answer:
C
Explanation:
Which of the following cities is located in the Randstad conurbation?A) BerlinB) AmsterdamC) CopenhagenD) ViennaE) Brussels
The correct option is B) Amsterdam is located in the Randstad conurbation.
The Randstad conurbation is a megalopolis in the western part of the Netherlands that includes the four largest Dutch cities: Amsterdam, Rotterdam, The Hague, and Utrecht, as well as several smaller cities and towns. With a population of over 7 million people, the Randstad is one of the largest urban areas in Europe and is a major economic and cultural center of the Netherlands. Amsterdam, as a part of the Randstad, plays a significant role in the region's economy and cultural life.
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why does simple random sampling require a field (a list of all individuals in the population) and why does the requirement of a field make collecting a simple random sample difficult? [2]
Simple random sampling is a popular method used in statistics to select a representative sample from a larger population. It involves choosing individuals from a population at random and without bias, so that each individual has an equal chance of being selected. In order to carry out this process, a field (a list of all individuals in the population) is required to ensure that every member of the population has an equal chance of being included in the sample.
The requirement of a field makes collecting a simple random sample difficult because it can be challenging to obtain a comprehensive list of all individuals in the population. In some cases, the population may be too large or constantly changing, making it impossible to create an accurate field. Furthermore, some individuals may be difficult to locate or may not wish to participate in the study, which can introduce bias into the sample.
In order to address these challenges, researchers may use alternative sampling methods such as stratified random sampling or cluster sampling, which can still yield representative samples even in the absence of a comprehensive field. However, simple random sampling remains a powerful tool in statistics when it is possible to obtain an accurate field and ensure that the sample is unbiased.
In conclusion, simple random sampling is a valuable method for selecting a representative sample from a population, but it requires a field to ensure that the sample is unbiased. The requirement of a field can make collecting a simple random sample difficult, but alternative sampling methods can be used when a comprehensive field is not available.
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The area shown with the dark shading is best identified as.
In 800 - 3000 BCE, the dark shaded areas suggest the agricultural revolution as the People lived in warm climates to grow food. Thus option B is correct.
Agriculture is the art or science of cultivating soil, growing vegetables, and raising livestock. Preparing and distributing products made from plants and animals for human consumption is what this industry entails. By far most of bread and materials on the planet are delivered by agribusiness.
Due to climate change, the agricultural revolution began with significantly lower temperatures. Mineral nitrogen is released into farmed soils at a slower rate and there are fewer bacterial activities.The combination of lower temperatures and shorter crop growth times resulted in lower yields. As a result, the best choice is B.
DISCLAIMER The question is incomplete.
The dark shaded areas of the map show early agricultural sites and the light shaded band shows warmer climate areas.
What do the dark shaded areas suggest about the agricultural revolution?
A.People lived in cooler climates to hunt.
B.People lived in warm climates to grow food.
C.People lived mostly in Africa to farm and hunt for food.
D.People lived in all parts of the world regardless of climate.
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the sand on the beach comes from which source? question 7 options: a) it forms in place at the beach b) further up slope on the continental c) pushed up from deep ocean by waves d) from adjacent beach
Answer:
b. further up slope on the continental shelf
Explanation:
All of the following are evidence supporting the theory of plate tectonics except for __________.
a. changes in the Moon's orbit due to shifting plates
b. ocean floor drilling
c. hot spots
d. paleomagnetism
All of the following are evidence supporting the theory of plate tectonics except for changes in the Moon's orbit due to shifting plates. The correct option is a.
The lithosphere, or outer layer of the Earth, is said to be divided into several sizable plates that move and interact with one another at plate boundaries, according to the theory of plate tectonics. Many lines of evidence from various scientific disciplines, including geology, geophysics and paleontology lend support to this theory.
The Moon's orbital changes caused by moving plates do not provide evidence for the plate tectonics hypothesis. The gravitational pull of the Earth and other heavenly bodies in the solar system affects the Moon's orbit. Only the movement and interaction of the lithospheric plates on Earth are explained by the plate tectonics theory. The correct option is a.
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What are the total acres of estuary in the Chowan River Basin?
The Chowan River Basin covers a large area of eastern North Carolina and is known for its diverse ecosystem and wildlife. The basin includes numerous estuaries, which are important habitats for fish, shellfish, and other aquatic species. While there is no specific data available on the total acres of estuary in the Chowan River Basin, it is estimated to be around 330,000 acres.
Estuaries are areas where freshwater and saltwater mix, creating a unique environment that supports a variety of plant and animal life. In the Chowan River Basin, the estuaries are home to a wide range of species, including blue crabs, oysters, and various types of fish. These habitats are also important for recreational activities such as fishing and boating.
Overall, the estuaries in the Chowan River Basin are an essential part of the region's ecosystem and play a crucial role in supporting both wildlife and human communities. Protecting these habitats and preserving the natural balance of the river basin is important for the long-term health and sustainability of the region.
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Which atmospheric layer has the warmest temperature?.
Answer:
The thermosphere
Explanation:
The thermosphere is often considered the "hot layer" because it contains the warmest temperatures in the atmosphere. Temperature increases with height until the estimated top of the thermosphere at 500 km. Temperatures can reach as high as 2000 K or 1727 ºC in this layer (Wallace and Hobbs 24).
Lake tai and the city of wuxi are located on the delta of the:.
Lake Tai and the city of Wuxi are located on the delta of the Yangtze River. The Yangtze River is the longest river in Asia and the third-longest in the world.
Its delta region is a major agricultural and industrial area, with many cities and towns located along its banks. The delta region is also an important transportation hub, connecting inland China with the rest of the world through its ports and waterways. Lake Tai and the city of Wuxi are located on the delta of the Yangtze River.
The Yangtze River is the longest river in Asia and the third-longest in the world. It flows eastward across China and empties into the East China Sea. The delta formed by the Yangtze River contains many lakes, including Lake Tai, and cities like Wuxi. This area is known for its fertile land, making it an important agricultural and industrial region in China.
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what kind of agriculture is primarily practiced in the dark-shaded areas on the map above? responses shifting cultivation shifting cultivation pastoral nomadism pastoral nomadism cattle ranching cattle ranching mediterranean mediterranean plantation
The dark-shaded areas on the map above are typically regions that receive a lot of rainfall and have a high level of humidity.
These areas are often characterized by dense vegetation and thick forests.
The type of agriculture that is primarily practiced in these regions is shifting cultivation.
This type of agriculture involves clearing small plots of land for cultivation and then moving on to a new plot once the soil has been depleted.
This cycle is repeated every few years. In addition to shifting cultivation, some regions may also practice pastoral nomadism, which involves moving herds of livestock in search of fresh grazing land.
However, this is less common in areas with dense vegetation. Cattle ranching is also practiced in some areas, but this is more common in drier regions with grasslands.
Finally, plantation agriculture may also be practiced in some areas with large-scale production of crops like tea, coffee, or rubber.
However, this is not as common in areas with dense forests as it requires large areas of cleared land.
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does increasing the amount of carbon dioxide in the atmosphere increase global warming
describe how humans living in the mississippi drainage basin might be able to reduce theamount of nutrients entering the drainage system, and thereby help minimize the oxygendepletion problem in the gulf. (
The Mississippi drainage basin is one of the largest in the world, covering over 40% of the continental United States. The Mississippi River itself is a major source of nutrients that enter the Gulf of Mexico, leading to harmful algal blooms and oxygen depletion that can result in "dead zones."
Humans living in the Mississippi drainage basin can take several steps to reduce the amount of nutrients entering the drainage system and help minimize the oxygen depletion problem in the Gulf. One approach is to reduce the use of fertilizers and other nutrient sources in agricultural and residential areas. This can be done by promoting sustainable agriculture practices that minimize runoff, such as using cover crops, rotating crops, and reducing tillage. Municipalities can also implement programs to encourage residents to reduce their use of fertilizers and pesticides on their lawns and gardens.
Another strategy is to improve wastewater treatment facilities to remove more nutrients before releasing treated water back into the environment. This can be done by upgrading treatment plants to include nutrient removal technologies such as biological nutrient removal or membrane filtration. Local governments can also implement programs to encourage homeowners to use less water, which can reduce the amount of nutrient-rich wastewater that needs to be treated. Finally, efforts can be made to restore wetlands and other natural areas that can absorb and filter nutrients before they enter the Mississippi River.
In conclusion, reducing the number of nutrients entering the Mississippi drainage basin can help minimize the oxygen depletion problem in the Gulf. This can be achieved through a combination of approaches, including reducing fertilizer use, improving wastewater treatment, and restoring wetlands. By taking these steps, humans living in the Mississippi drainage basin can help protect the health of the Gulf and its ecosystem.
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what caused eastern north america and europe to plunge into an ice age in the blockbuster hit the day after tomorrow? group of answer choices deep ocean currents moved faster surface currents slowed down deep ocean currents slowed down surface currents reversed direction
Surface currents slowed down caused eastern north america and europe to plunge into an ice age in the blockbuster hit the day after tomorrow.
The fastest and most constant component of ocean water are ocean currents. The variations in temperature and salinity that exist in the various seas and oceans around the world, in addition to other factors like the Earth's rotation, are the root causes of these flows.
Ocean currents are influenced by a number of factors, one of which is Earth's rotation. Ocean waters rotate and flow in different directions depending on their geographic location because of the Coriolis force. As a result, rotation has a smaller impact on the force of water movement at the Equator.
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With what other state does NC share the Chowan River Basin?
North Carolina shares the Chowan River Basin with the neighboring state of Virginia. The Chowan River Basin is located in the northeastern part of North Carolina and is shared with the southern part of Virginia.
The Chowan River Basin covers an area of over 5,000 square miles and includes the Chowan River, its tributaries, and wetlands. It is an important natural resource and provides habitat for a variety of fish, wildlife, and plant species. The Chowan River itself is approximately 50 miles long and flows through the towns of Edenton and Winton, North Carolina before emptying into the Albemarle Sound. The Chowan River Basin is also home to several state parks and wildlife refuges, including Merchants Millpond State Park and the Great Dismal Swamp National Wildlife Refuge. The two states work together to manage and protect the Chowan River Basin's resources through various conservation efforts, such as water quality monitoring, land conservation, and wildlife management.
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Where did the following mass-wasting event take place? A layer of rock broke loose along an exfoliation joint and caused damage in a famous recreation area.
Choose one:
A. Elm, the Swiss Alps (1881)
B. Armero, Colombia (1985)
C. Yosemite National Park (1996)
D. Gros Ventre Slide, Wyoming (1925)
The mass-wasting event described took place in Yosemite National Park in 1996. Option B .
A layer of rock broke loose along an exfoliation joint in the park's famous recreation area, causing damage and leading to the closure of some areas.
Exfoliation joints are a type of joint that develops in rock due to release of pressure from the removal of overlying rock layers. In Yosemite, these joints often occur in a concentric pattern, creating dome-like features such as Half Dome and El Capitan. The rock fall event in 1996 was a reminder of the ongoing geological processes that shape this iconic landscape.
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quartz sandstone is a rock type that is found in more than one province in georgia. what type of rock is this?
Quartz sandstone is a type of sedimentary rock that is found in multiple provinces in Georgia.
Quartz sandstone is formed from the accumulation and consolidation of sand-sized grains of quartz, often from ancient riverbeds or beaches. The quartz grains are held together by a natural cement, typically made up of silica, carbonate, or iron oxide minerals. Quartz sandstone is often resistant to weathering and erosion, making it a common building material and paving stone.
Quartz sandstone is formed from the accumulation and cementation of mineral and rock fragments, primarily composed of quartz, which is a very common and durable mineral. As a sedimentary rock, it is often found in various regions, including multiple provinces in Georgia.
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The continental drift hypothesis was rejected primarily because Alfred Wegener could not _____________.
A) find geologic similarities on different continents
B) disprove competing theories that were more accepted by scientists
C) identify a mechanism capable of moving continents
D) all of the above
The continental drift hypothesis was rejected primarily because Alfred Wegener could not identify a mechanism capable of moving continents. Option C .
Although Wegener presented compelling evidence such as the fit of the continents, matching geologic features, and similarities of fossils and rocks across continents, his explanation for the movement of the continents was incomplete. Wegener proposed that the continents plowed through the ocean floor, but he could not explain how this was possible. In addition, Wegener's ideas faced opposition from many scientists who were wedded to the prevailing notion of a stationary Earth. As a result, Wegener's theory was largely rejected until the discovery of plate tectonics in the 1960s provided a mechanism for continental drift.
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which exoplanet orbits closest to its star? A. hd 33564 b hd 698988 c hd 39091
Hd 698988 exoplanet orbits closest to its star.
B is the correct answer.
Any planet outside of our solar system is an exoplanet. The majority of exoplanets orbit other stars, while rogue planets—free-floating exoplanets that are unattached to any star—orbit the galactic centre.
Proxima Centauri b is our nearest known exoplanet neighbour, located just four light-years away. Super-Earth-sized exoplanet Proxima b revolves around a M-type star. It has a mass of 1.27 Earths, orbits its star in 11.2 days, and is 0.0485 AU away from it.
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What special classification did the Chowan River Basin receive in 1979?
According to the Chowan River Basin article, the Chowan River Basin received a special classification as an Outstanding Resource Water (ORW) in 1979.
An ORW is a body of water that is protected by the federal Clean Water Act because it is thought to have extraordinary ecological, recreational, or aesthetic significance.
The Chowan River Basin is recognised as an important and priceless natural resource by being designated as an ORW. Additionally, it offers more protection and control to guarantee that the river's ecosystem and water quality are kept to a high standard.
To protect the river's ecological and recreational value as an ORW, regulatory agencies must assess and approve any proposed alterations or activities that may have an influence on the river's water quality.
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Two planes, A and B, start from the same place and move in different dire
plane B is 300 miles per hour.
The two planes are
miles apart after one hour.
Okay, let's break this down step-by-step:
Planes A and B start from the same place and move in different directions.Plane B moves at 300 miles per hour.After 1 hour, planes A and B are 200 miles apart.To determine the speed of plane A, we can set up a simple equation relating their speeds and the distance between them after 1 hour:
Speed of plane B = 300 mph
Distance between planes after 1 hour = 200 miles
So if we let v = speed of plane A in mph, we have:
300 + v = 200
v = 100
Therefore, the speed of plane A is 100 miles per hour.
Does this make sense? Let me know if you have any other questions!
what type of boundaries do shatterbelts concern?
Shatterbelts concern regions that are located at the boundary of two or more competing and colliding cultural, political or economic spheres of influence.
These regions are often characterized by political instability, social conflict, and territorial disputes due to the friction between the different cultural and political groups that are competing for power and resources. Shatterbelts can occur at any type of boundary, including national borders, linguistic and ethnic boundaries, or even religious and ideological borders. The term "shatterbelt" was originally coined by geographer Saul Cohen to describe the Balkan region in Europe, but it has since been applied to other regions around the world that exhibit similar characteristics of instability and conflict.
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