in order to signal a stronger stimulus, action potentials become? A. More frequent only
B. Higher in amplitude only
C. Longer-lasting only
D. Higher in amplitude and more frequent
E. Higher in amplitude and longer lasting

Yes, it is possible for an individual to have symptoms and behaviors characteristic of both anorexia nervosa and bulimia nervosa at the same time. This is referred to as "anorexia bulimia" or "bulimarexia."

Anorexia nervosa is an eating disorder characterized by an intense fear of gaining weight and a distorted body image, leading to severe food restriction and significant weight loss. Bulimia nervosa, on the other hand, involves recurrent episodes of binge eating followed by compensatory behaviors such as self-induced vomiting, excessive exercise, or the misuse of laxatives or diuretics to prevent weight gain.

In cases of anorexia bulimia, individuals may exhibit restrictive eating patterns, severe food limitation, excessive exercise, and an intense fear of weight gain associated with anorexia nervosa. At the same time, they may also engage in episodes of binge eating followed by purging behaviors similar to those seen in bulimia nervosa. These individuals may cycle between the restrictive behaviors of anorexia and the binge-eating and purging behaviors of bulimia.

It's important to note that anorexia bulimia is not an official diagnostic category recognized by the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). However, individuals can exhibit symptoms of both disorders concurrently, and it is crucial for those experiencing these symptoms to seek professional help for proper assessment and treatment.

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Answer:

A. Hydrogen.

Explanation:

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The following is an example of a vestigial organ that could be found in a transitional fossil is d. a toe that does not contribute to movement.

Vestigial organs are structures that have lost most or all of their original function through the process of evolution. In the case of a vestigial toe, it is a remnant of an ancestral trait that has become less useful or obsolete over time, as the organism's evolutionary needs have changed. Transitional fossils are important because they help illustrate the gradual changes that occur in species over time, supporting the theory of evolution. The presence of vestigial organs in transitional fossils can provide valuable evidence of evolutionary history and the gradual adaptation of a species to its environment.

By examining these remnants, scientists can better understand the past and gain insights into how species have evolved and adapted to their surroundings. In conclusion, the correct answer is d. a toe that does not contribute to movement, is an example of a vestigial organ that could be found in a transitional fossil. It demonstrates the evolutionary process, as organisms have adapted and changed over time, making certain structures less important or unnecessary for survival.

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An infant may need supplemental water when they are not getting enough fluids from breastmilk or formula alone, or when they are at risk of dehydration.

When an infant is dehydrated, they may have a dry mouth and tongue, sunken eyes, and no tears when crying. If a baby is ill and has a fever or diarrhea, or is vomiting, they may need extra fluids to replace the ones lost. Additionally, if it is hot and humid weather, or the baby is very active, they may need extra fluids.

In these cases, a pediatrician may recommend an electrolyte solution like Pedialyte. It is also important to note that giving water to an infant under 6 months old is not recommended, as it can interfere with their ability to absorb the necessary nutrients from breastmilk or formula.

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The eyeball is located in a bony structure called the orbit, also known as the eye socket.

The orbit is made up of several bones, including the frontal bone, maxilla, zygomatic bone, and ethmoid bone. These bones protect and support the eyeball, while also providing attachment points for muscles that control eye movement. The orbit also contains other structures such as the lacrimal gland, which produces tears, and the optic nerve, which transmits visual information from the eye to the brain. It is important to note that the orbit is not only crucial for the function of the eye, but also for the appearance of the face.

Any trauma or injury to the orbit can cause significant damage to the eye, including vision loss, and can result in a change in the overall appearance of the face. Therefore, it is important to take proper precautions to protect the orbit and the eye, such as wearing appropriate safety gear during activities that may pose a risk of injury.

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Foliated metamorphic rocks possess a planar fabric consisting of mineral grains in preferred orientations or preferred patterns of association (banding).

Option B) is correct.

Foliated metamorphic rocks exhibit a distinct texture known as foliation, characterized by the presence of a planar fabric consisting of mineral grains aligned in preferred orientations or exhibiting preferred patterns of association, commonly referred to as banding. This texture develops due to the reorientation and deformation of minerals under intense heat and pressure during the metamorphic process.

The alignment and layering of minerals create a visible foliation that can range from subtle to pronounced, giving the rock a distinct layered appearance. This foliation provides valuable information about the rock's geological history and the conditions under which it formed.

Therefore, the correct option is B)

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Complete question is:

Foliated metamorphic rocks possess which of the following?

A) Leafy plant fossils (ancient foliage)

B) A planar fabric consisting of mineral grains in preferred orientations or preferred patterns of association (banding)

C) A homogeneous texture resulting from randomly oriented grains

D) Minerals precipitated directly from sea water

cretinism. hope it helps !

A condition caused by congenital deficiency of the thyroid secretion that is marked by arrested mental and physical development is "Congenital hypothyroidism".

This disorder develops when the thyroid gland is unable to produce enough thyroid hormone, which is necessary for healthy development and growth. Synthetic thyroid hormone replacement therapy is used as a form of treatment.

A variety of symptoms, including as poor eating, constipation, dry skin, jaundice, and a raspy cry, can result from congenital hypothyroidism. It can also result in intellectual impairment and impaired growth if left untreated.

Typically, newborn screening programs that check for blood levels of thyroid-stimulating hormone (TSH) make the diagnosis of congenital hypothyroidism. Further testing is carried out to confirm the diagnosis and ascertain the underlying cause if TSH levels are high.

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The frequency of the recessive allele in the population of mice is 0.7 is a true statement since there are only two alleles in the population, the frequency of the recessive allele can be calculated by subtracting the frequency of the dominant allele from 1.

If the frequency of the dominant allele controlling coat color in a population of mice is 0.3, it implies that the frequency of the recessive allele can be calculated as 1 - frequency of the dominant allele. In this case, the frequency of the recessive allele would be 1 - 0.3, which is 0.7.

The frequency of the recessive allele indicates the proportion of individuals in the population carrying the recessive allele.

Since there are only two alleles for this gene, the dominant and recessive alleles, their frequencies must add up to 1.

It is important to note that the given information does not directly provide any insight into selection pressures or the frequency of homozygous dominant mice in the population.

The information specifically mentions the frequency of the dominant allele, and based on that, we can deduce the frequency of the recessive allele as 0.7.

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The protists that move by means of a whip-like tail are called flagellates. These single-celled organisms use a whip-like structure called a flagellum to propel themselves through their environment.

The flagellum is made up of microtubules and can be found in one or multiple numbers on the cell surface. Flagellates are found in a variety of habitats, including freshwater, marine environments, and soil. Some common examples of flagellates include Euglena, Trypanosoma, and Giardia. Flagellates play important roles in aquatic food chains as primary producers and as a food source for larger organisms. They can also be parasitic, causing diseases in both humans and animals.

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To visually differentiate between conidia and sporangia, observe their appearance and reproductive structures. Conidia are asexual spores that form on conidiophores, while sporangia are sac-like structures containing asexual spores called sporangiospores.

Conidia are produced externally on specialized structures called conidiophores, often appearing as chains or clusters of individual spores. They vary in size, shape, and color depending on the fungal species. Sporangia, on the other hand, are sac-like structures that enclose sporangiospores. These structures form at the tips of specialized hyphae called sporangiophores and release spores when they rupture.

Summary: Visually differentiating between conidia and sporangia involves examining their reproductive structures and appearance. Conidia form on conidiophores and appear as chains or clusters, while sporangia are sac-like structures containing sporangiospores.

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A mutation in a gene that leads to permanent binding of cGMP to cGMP-gated channels would result in a photoreceptor that is always depolarized and unresponsive to light.

In normal photoreceptor cells, light stimulation causes a decrease in cGMP levels, leading to the closure of cGMP-gated channels and hyperpolarization of the cell. This hyperpolarization results in a decrease in neurotransmitter release, which is the basis of signal transmission to the brain. However, in the scenario of a mutation where cGMP-gated channels are constantly bound to cGMP, the channels would remain open, allowing a continuous influx of cations and keeping the cell depolarized. This sustained depolarization would render the photoreceptor unresponsive to further light stimuli and unable to transmit visual signals effectively.

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Green algae are most commonly found in moist, aquatic environments, such as ponds, lakes, and streams. However, they are least likely to be found in extreme environments, such as in the deep ocean or in deserts.

This is because green algae require a specific combination of temperature, light, and nutrients to survive and thrive. In extreme environments, such as the deep ocean, there is usually a lack of light and nutrients, making it harder for green algae to survive.

Additionally, the temperatures in these environments can be too extreme for them to survive. Deserts, on the other hand, lack the moisture needed for green algae to live. Despite this, green algae have been found in some of the most extreme environments, such as in the ice of Antarctica and in the hot springs of Yellowstone National Park.

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Keratin is an important aspect of nonspecific defense because it...B.) creates a physical barrier against pathogens.

Keratin is a fibrous protein that makes up the tough outer layer of skin, nails, and hair. This physical barrier helps to prevent pathogens from

Keratin is a fibrous protein that makes up the tough outer layer of skin, entering the body and causing infections.

Keratin is a protein that helps form hair, nails and your skin's outer layer (epidermis). It helps support your skin, heal wounds and keep your nails and hair healthy. There are 54 kinds of keratin in your body

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The subdiscipline of anatomy that examines the microscopic structure of tissues is called "histology."

Histology is an essential field within anatomy, as it focuses on studying the organization and arrangement of cells and tissues at a microscopic level. This analysis enables researchers and medical professionals to understand the biological functions and structural organization of various tissues in the human body.

By examining tissue samples under a microscope, histologists can identify and analyze the different cell types, their organization, and the extracellular matrix that supports them. This information is crucial for understanding how tissues function in both health and disease states. Histology also plays a vital role in medical diagnoses and research, as it aids in the identification of pathological conditions and contributes to the development of new treatments and therapies.

Overall, histology is an indispensable subdiscipline within the field of anatomy that greatly enhances our comprehension of the microscopic structure of tissues.

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During prophase, the spindle fibers form to later attach and move chromosomes.

Spindle fibers are composed of microtubules, which are responsible for organizing and segregating the chromosomes during cell division. During prophase, the first stage of mitosis, the chromosomes condense and become visible. As the chromosomes condense, the spindle fibers begin to form. The spindle fibers are long, thin, and microtubular structures that extend from the centrosomes, which are also known as spindle poles. These fibers attach to the chromosomes and help to move them to the center of the cell during later stages of mitosis.

The spindle fibers are crucial for the proper segregation of chromosomes during cell division. Without these fibers, the chromosomes would not be able to move to their correct positions and would not be properly distributed to the daughter cells. The spindle fibers are also responsible for separating the chromatids during anaphase, the stage of mitosis that follows prophase.

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Infectious laboratory waste is typically sterilized prior to disposal by using methods that effectively kill all microorganisms present on the waste.

This is important to prevent the spread of pathogens and to protect the environment and public health.

Some common methods used for sterilizing laboratory waste include:

Autoclaving: This is a high-pressure, high-temperature method that uses steam to sterilize waste. Autoclaving is effective for most types of laboratory waste and is widely used in laboratories.

Incineration: This is a method of burning waste at high temperatures to destroy pathogens. Incineration is effective for all types of laboratory waste, including sharps, glassware, and other materials.

Chemical disinfection: This method uses chemical agents to kill or inactivate microorganisms. Chemical disinfectants such as bleach or hydrogen peroxide can be used to treat laboratory waste.

Irradiation: This method uses ionizing radiation, such as gamma rays, to kill microorganisms. Irradiation can be used to sterilize laboratory waste, but it requires specialized equipment and precautions.

The specific method used for sterilizing laboratory waste will depend on the type of waste being disposed of and the regulations and guidelines in place for the particular laboratory or facility.

It is important to follow proper protocols for handling and disposing of laboratory waste to ensure safety and compliance with regulations.

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All cell membranes have the same basic structure, with the hydrophobic tails of the phospholipids facing into the interior membrane and the hydrophilic heads on the outside.

The structure of the cell membrane is crucial for maintaining cellular integrity and function. Any disruption to the membrane, whether through physical damage or chemical agents, can have severe consequences for the cell and the organism as a whole.

This arrangement creates a bilayer, which serves as a barrier that separates the interior of the cell from the external environment. The hydrophobic tails of the phospholipids interact with each other, forming a stable interior, while the hydrophilic heads interact with water, allowing the membrane to be impermeable to most polar or charged molecules.

In addition to phospholipids, cell membranes also contain other lipids, such as cholesterol and glycolipids, which contribute to the fluidity and stability of the membrane. Proteins are also present in the membrane, serving various functions such as transport, signaling, and structural support. Some proteins are embedded within the membrane, while others are attached to the surface.

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The advantage of Fluorescence in situ hybridization (FISH) over Northern and Southern blots is d. Blotting is not required in FISH.

In FISH, there is no need for the blotting step, which is a crucial part of Northern and Southern blots. Blotting involves transferring nucleic acid samples from a gel to a solid support membrane for further analysis. In Northern blotting, RNA is transferred, while in Southern blotting, DNA is transferred.

In contrast, FISH directly visualizes the presence and location of specific nucleotide sequences within intact cells or tissue sections. It uses fluorescently labeled probes that hybridize with complementary target sequences. The fluorescence signals emitted by the bound probes can be detected and visualized under a microscope.

FISH eliminates the need for blotting, making the technique simpler and more efficient compared to Northern and Southern blots. It allows for direct visualization of nucleotide sequences in their cellular or tissue context, providing spatial information about gene expression or genomic organization.

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Your question is about the type of agent the protein of eggs becomes when cooked. The correct answer is:
C. thickening

The coagulation of egg protein when cooked also makes it an excellent emulsifying agent that helps to bind ingredients together.  Additionally, the unique properties of egg proteins make them useful in creating foams and meringues. Egg whites are often beaten to create stiff peaks, which trap air and create a light, fluffy texture.

The proteins in egg whites provide the necessary structure to maintain the foam and keep it from collapsing. In baking, eggs are often used as a leavening agent, contributing to the rise and texture of cakes and other baked goods.

In summary, the coagulation of egg proteins when cooked creates a network that thickens mixtures, binds ingredients, stabilizes structures, creates foam, and contributes to the texture and rise of baked goods.

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The description of a gram-negative diplococcus bacterium refers to the physical characteristics of a type of bacteria called Neisseria. These bacteria are spherical in shape and occur in pairs.

Since they occurs in pairs which is what the term "diplococcus" refers to. Neisseria bacteria are gram-negative, meaning that they have a thin cell wall that does not retain the crystal violet stain used in the Gram staining technique commonly used to classify bacteria. This distinguishes them from gram-positive bacteria, which have a thicker cell wall that retains the stain and appears purple under the microscope.

There are two species of Neisseria that commonly infect humans: Neisseria gonorrhoeae, which causes the sexually transmitted infection gonorrhea, and Neisseria meningitidis, which can cause meningitis and other severe infections. These bacteria are typically transmitted through sexual contact or respiratory secretions and can cause a range of symptoms depending on the site of infection.

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The protein filaments that the researcher should be studying in order to slow down the movement of amoebas by disrupting their cell membranes are actin and myosin.

Actin and myosin are the two main types of protein filaments found in the cytoskeleton of cells, and they play important roles in cell movement and shape maintenance.

Actin filaments are involved in the formation of the cell membrane and cell movement, while myosin filaments are involved in the contraction of the cell. By disrupting the function of these protein filaments, the researcher can potentially slow down the movement of amoebas by making it more difficult for them to move and change shape.

However, it is important to note that disrupting the function of these protein filaments could also have negative effects on other cellular processes and functions, so the researcher would need to be careful in their approach.

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Within the brain, clusters of gray matter deep are called:
D. nuclei

Gray matter refers to areas of the brain that are rich in cell bodies, as opposed to white matter, which is primarily composed of myelinated axons. Deep within the brain, there are clusters of gray matter called nuclei.

These nuclei play important roles in regulating various functions of the body, such as movement, sensory processing, and autonomic functions like breathing and heart rate. Different nuclei are responsible for different functions, and they often work in conjunction with other areas of the brain to coordinate complex processes.

For example, the basal ganglia, a collection of nuclei in the brain, are involved in regulating voluntary movement and are often affected in disorders such as Parkinson's disease. Understanding the functions of different nuclei within the brain is crucial for understanding normal brain function as well as the pathophysiology of various neurological disorders.

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The statement is correct. The tropics, particularly tropical rainforests, have the highest concentration of different species compared to any other region on Earth. This phenomenon is known as "biodiversity hotspots."

The tropics provide a combination of favorable environmental conditions, such as stable climate, ample rainfall, and diverse habitats, that support a wide range of species.

The high species diversity in the tropics can be attributed to several factors, including the long evolutionary history, geographic isolation, and complex ecological interactions. The tropics have experienced relatively stable climatic conditions over millions of years, allowing for the accumulation of diverse species through evolutionary processes.

Regarding undiscovered species, it is widely believed that the majority of unknown and yet-to-be-described species are found in tropical regions. This is because tropical ecosystems, with their intricate and diverse habitats, provide ample opportunities for new discoveries. Many species in the tropics, particularly insects, plants, and microorganisms, remain undocumented or poorly studied due to the challenges of accessing remote areas, limited research efforts, and the sheer complexity of tropical biodiversity.

Efforts are ongoing to document and understand the vast biodiversity of tropical regions, as these areas are of great scientific interest and play a crucial role in global ecological balance.

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The serous fluid that helps in cardiac function is located in the pericardial sac. The pericardial sac is a double-walled sac that surrounds and protects the heart. It contains two layers, the outer fibrous layer and the inner serous layer. The serous layer consists of two sublayers, the parietal layer and the visceral layer, which are separated by a small amount of serous fluid. The parietal layer lines the fibrous layer of the pericardial sac, while the visceral layer is closely attached to the heart surface.

The serous fluid within the pericardial sac acts as a lubricant, allowing the heart to beat and move within the sac without friction. It also helps to cushion the heart against external pressure or trauma. The accumulation of excess fluid within the pericardial sac, a condition known as pericardial effusion, can impair cardiac function and lead to complications such as cardiac tamponade. Therefore, the presence and proper functioning of the serous fluid in the pericardial sac are essential for the normal functioning of the heart.

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Habitat isolation and temporal isolation are the two types of prezygotic isolation mentioned in the experiments for haw flies and apple flies.

From the experiments described for haw flies and apple flies, two kinds of prezygotic isolation mentioned are:

Habitat Isolation: The haw flies and apple flies inhabit different habitats or environments, which limits their chances of encountering and mating with each other.

Temporal Isolation: The haw flies and apple flies have different mating seasons or times of activity, resulting in limited opportunities for them to mate with each other.

Habitat isolation is a type of prezygotic reproductive barrier where closely related species occupy different habitats or ecological niches, preventing or greatly reducing their chances of encountering each other for mating.

This isolation maintains genetic divergence and promotes speciation by limiting gene flow between populations.

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The nephron loop (also known as the loop of Henle) uses the medullary osmotic gradient to concentrate urine.

This process involves osmosis, which allows water to move passively across a semi-permeable membrane in response to a concentration gradient, ultimately resulting in the concentration of urine. Osmotic gradient is developed as a result of osmosis (movement of water through a semi-permeable membrane from as region of higher concentration to a region of lower concentration). Urine is produced as a yellowish coloured fluid which contains the toxic substances of our body which are needed to be released from the body.

The nephron loop is a part of bean shaped paired organs present in our excretory system called kidneys. The Henle loop, also known as Henle's loop, the nephron loop, or its Latin equivalent ansa nephroni, is the section of a nephron in the kidney that connects the proximal convoluted tubule to the distal convoluted tubule. The primary purpose of the loop of Henle, which bears the name of its discoverer, German anatomist Friedrich Gustav Jakob Henle, is to establish a gradient of concentration in the kidney's medulla.

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If a plant is allowed to grow from seed on a rotating platform, it will grow at an angle, pointing inward. So, the statement is True.

This phenomenon is known as gravitropism, which is the plant's ability to sense the direction of gravity and grow in response to it. When the platform rotates, the plant will experience a change in gravitational force, causing it to adjust its growth angle in order to maintain an upright position. As a result, the plant will appear to be growing at an angle, pointing inward. This effect can be seen in many different types of plants, including those grown in space, where there is no gravity to provide a consistent growth direction. Understanding how gravitropism works can be important for plant growth in space or other environments where the gravitational force may be disrupted, as it can affect the plant's ability to absorb nutrients and water. Hence, when it grows on a rotating platform, it will grow pointing inward.

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The primary cause of esophageal varices is C) Portal hypertension.

Esophageal varices are enlarged and swollen veins in the lower part of the esophagus that occur as a result of increased pressure within the portal vein system.

Portal hypertension, which is characterized by elevated blood pressure in the portal vein, commonly occurs due to liver disease or liver cirrhosis. When liver function is compromised, blood flow through the liver is impeded, leading to increased pressure in the portal vein.

This elevated pressure can cause the blood to seek alternate pathways, leading to the development of varices in the esophagus and other areas of the gastrointestinal tract.

Alcoholism (option A) and liver failure (option B) can contribute to the development of portal hypertension, but the primary cause is the increased pressure in the portal vein.

Gastric reflux (option D) is not directly related to the development of esophageal varices.

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Answer:

C. They spread disease and parasites.

Explanation:

Movement corridors are potentially harmful to certain species because they spread disease and parasites.

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False.

Another name for the oil gland is the sebaceous gland, not the sudoriferous gland.

Sudoriferous glands, also known as sweat glands, are responsible for producing sweat, which helps regulate body temperature. These glands are distributed throughout the skin and are particularly abundant in areas such as the palms, soles of the feet, and armpits.

On the other hand, sebaceous glands are oil glands that are also found throughout the skin, except for the palms and soles.

They secrete sebum, an oily substance that helps lubricate and protect the skin and hair. Sebum plays a role in moisturizing the skin, preventing excessive dryness, and providing a protective barrier.

While both sudoriferous and sebaceous glands are associated with the skin, they have different functions and produce different substances.

Therefore, it is incorrect to say that another name for the oil gland is the sudoriferous gland.

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