As a river flows downhill carrying sediment, what happens when the river widens and slows down?

Main Answer: The important citric acid cycle intermediate that is also formed during gluconeogenesis from pyruvate is Oxaloacetate.

Supporting Answer: During gluconeogenesis, pyruvate is converted to oxaloacetate by the enzyme pyruvate carboxylase. Oxaloacetate is an important intermediate in the citric acid cycle, where it reacts with acetyl-CoA to form citrate. In the citric acid cycle, citrate is then metabolized through a series of reactions to produce energy in the form of ATP. In addition, oxaloacetate plays a crucial role in the regulation of the citric acid cycle by controlling the rate of entry of acetyl-CoA into the cycle. It is also involved in several other metabolic pathways such as the aspartate synthesis pathway and the urea cycle. The formation of oxaloacetate during gluconeogenesis is important because it allows the carbon skeletons of certain amino acids to be converted to glucose for energy production.

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Peaches and nectarines are considered a drupe due to their large, center seed.

A drupe is a type of fruit that develops from a single ovary and has three distinct layers: the outer skin or exocarp, the fleshy middle layer or mesocarp, and the hard, woody endocarp that surrounds the seed. In the case of peaches and nectarines, the large, center seed is enclosed within the hard endocarp, which is surrounded by the fleshy and edible mesocarp. The outer skin, or exocarp, can be smooth or fuzzy, depending on the variety.

The drupe structure is a common characteristic of many fruits, including peaches, nectarines, cherries, plums, and mangoes. The presence of a large, center seed within the fruit is a defining feature of drupes. This structure protects the seed and aids in its dispersal, as animals that eat the fleshy mesocarp can transport the seed to new locations.

So, to summarize, peaches and nectarines are considered a drupe because they have a large, center seed surrounded by a fleshy mesocarp and a hard endocarp.

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Semen is a fluid that is ejaculated during male sexual intercourse and contains sperm, seminal fluid, and various other substances.

Sperm are produced in the seminiferous tubules within the testes, and then move into the epididymis where they mature and are stored. During ejaculation, sperm pass from the epididymis through the vas deferens, which is a muscular tube that extends from the epididymis, up through the inguinal canal, and behind the urinary bladder. The vas deferens merges with the duct from the seminal vesicle to form the ejaculatory duct, which then passes through the prostate gland and into the urethra. The sperm then mix with seminal fluid from the prostate gland, seminal vesicles, and bulbourethral gland to form semen, which is then ejaculated through the external urethral orifice.

The seminal fluid is produced by the prostate gland, seminal vesicles, and bulbourethral gland. The prostate gland produces a milky fluid that contains enzymes, citric acid, and prostate-specific antigen (PSA). The seminal vesicles produce a viscous fluid that contains fructose, amino acids, and prostaglandins. The bulbourethral gland produces a clear, viscous fluid that acts as a lubricant for the urethra during ejaculation.

A male who is considering a vasectomy does not need to be concerned about a change in testosterone production as a result of this surgery. This is because the testes continue to produce testosterone even after a vasectomy, and testosterone production is not affected by the procedure.

A vasectomy does not impair a man's ability to ejaculate seminal fluid because the procedure only involves the vas deferens, which is responsible for transporting sperm from the testes to the urethra during ejaculation. The seminal fluid produced by the prostate gland, seminal vesicles, and bulbourethral gland still enters the urethra during ejaculation and is ejaculated along with any sperm that were present in the vas deferens prior to the procedure. Therefore, while a vasectomy does result in sterilization (i.e. the inability to father a child), it does not affect the ability to ejaculate seminal fluid.

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Semen is a fluid that is produced by males during sexual intercourse and contains sperm, seminal fluid, and various other substances.

Sperm is produced by the testes, moves into the epididymis, passes through the vas deferens which merges with the seminal vesicle duct to form the ejaculatory duct, and then passes through the prostate gland and into the urethra, mixes with seminal fluid and is then released through the external urethral orifice.

The seminal fluid is produced by the prostate gland, seminal vesicles, and bulbourethral gland.

A male considering a vasectomy does not need to be concerned about a change in testosterone production because the testes continue to produce testosterone after a vasectomy.

A vasectomy does not impair a man's ability to ejaculate seminal fluid because the procedure only involves the vas deferens and not the prostate gland.

A vasectomy is a surgical procedure that involves cutting or sealing the vas deferens thereby preventing sperm from reaching semen ejaculated during sexual intercourse.

During the vasectomy procedure, a small incision or puncture is made in the scrotum to access the vas deferens. The vas deferens is then cut, and a section may be removed or tied off.

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At rest, the parasympathetic nervous system primarily dominates the regulation of homeostasis.

It promotes activities that conserve and restore energy, such as reducing heart rate, constricting blood vessels, and stimulating digestion. The parasympathetic system helps maintain a state of calm, rest, and digestion, often referred to as "rest and digest." Conversely, the sympathetic nervous system, although less active at rest, can still contribute to maintaining homeostasis by monitoring and responding to potential threats.

It prepares the body for action by increasing heart rate, dilating blood vessels, and releasing stress hormones. The balance between these two systems ensures the body's physiological equilibrium during rest and during times of stress or activity.

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Complete Question:

What is the relative contribution of the sympathetic and parasympathetic nervous systems to the regulation of homeostasis at rest?

men and women have a(n) equal amount of sex hormones, with different distributions of hormones.

Sex hormones are known as chemical substances which is produced by the sex organs of both male and female. For example, testosterone is the male sex hormone which is produced by the testis, and oestrogen is the female sex hormone which is produced by the ovary. These two sex hormones affect the sexual features of an organism. Hence, they are known as sex hormones.

Reproductive hormones are usually made in the ovaries (in females) and testes (in males).

The 4 main sex hormones are given below----

estrogen, testosterone, and progesterone

estrogen and testosterone is considered as the best sex hormones

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During resting conditions, [tex]CO_{2}[/tex] pressures in the blood entering the pulmonary system average about 45 mmHg.

The measurement of carbon dioxide in arterial or venous blood is partial pressure of carbon dioxide (PCO2). It frequently serves as a sign that the lungs are receiving adequate alveolar ventilation. The value of PCO2 typically falls within the range of 4.7 to 6.0 kPa or 35 to 45 mmHg under normal physiological conditions.

Carbon dioxide's partial pressure in capillary blood is approximately 45 mm Hg, but it is approximately 40 mm Hg in alveoli. However, both blood and alveolar fluids have a solubility of carbon dioxide that is roughly 20 times larger than that of oxygen.

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The complete question is:

During resting conditions, CO2 pressures in the blood entering the pulmonary system average about _____.

In the unit Water and Oceans, you will be learning about waves, ocean currents, rivers and lakes, and tides.

The hydrosphere, which refers to all of the water on Earth, is made up of several components. Oceans are the most significant and well-known components of the hydrosphere. The ocean is a vast body of saltwater that covers more than 70% of the planet's surface and is divided into five main sections, with the Atlantic Ocean being the largest. The Indian, Southern, Arctic, and Pacific Oceans are the other four. Water is essential for life and is a vital resource for humans, animals, and plants alike.

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If the sebaceous glands slow their function, the skin may become dry, and vulnerable to damage and infection. While overactive sebaceous glands can lead to oily skin and acne.

Sebaceous glands are glands in the skin that secrete sebum, an oily substance that helps lubricate and protect the skin. If the sebaceous glands slow their function, there will be a decrease in the production of sebum, which can have several consequences for the skin. One of the most immediate effects of decreased sebum production is that the skin may become dry and prone to itching or cracking. Additionally, sebum helps to protect the skin from microbial and environmental damage, so a reduction in its production can make the skin more vulnerable to infection and damage.

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The benefit of crossing over is that during crossing over there is an exchange of genetic material between the chromosomes.  So option A is correct.

Crossing over produces new gametes with new sets of genes. This helps to increase the genetic variety of any progeny. Crossing over is important because it guarantees genetic diversity and promotes genetic reassortment, which is the primary determinant of genetic diversity among offspring that would otherwise result in a high incidence of abnormalities and genetic disorders.

In the event of unequal crossing over, the event results in the deletion of one of the chromatids involved and the insertion of another, which can result in genetic disease or even developmental failure if a critical gene is lost.

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The conditions that a trangenic organism must satisfy in order to be patented are it must be new, it must be useful, it must be easy to replicate, and it must be based on widely-used technology. The correct options are a, b,e, and f.

Transgenic organisms are organisms that have had their genetic material modified by the introduction of genes from another organism. In some cases, these organisms may be patentable, which means that the person or organization who created them can apply for and obtain a patent on the organism. In order to be patentable, a transgenic organism must meet certain criteria.

First, the organism must be new and not previously disclosed or described in the public domain. This means that the organism must not have been previously known or available to the public before the patent application is filed.

Second, the organism must have a practical application or utility. The invention must have a specific use or function and must be able to be practically applied in a real-world setting.

Third, the transgenic organism should be able to be reproduced or replicated consistently and reliably. This means that the invention must be able to be reproduced by others using the same methods and techniques described in the patent application.

Fourth, the transgenic organism must be based on widely-used technology, which means that it should be an advancement or improvement of existing technology or technique. The invention should be based on well-established scientific principles, and should not be too far removed from existing technologies.

It's also worth noting that new animal breeds are not patentable subject matter, so a transgenic organism cannot be a new animal breed in order to be patented.

Finally, non-obviousness is a requirement for any patentable invention, including transgenic organisms. This means that the invention must not be obvious to someone skilled in the field, and must represent a significant advance over existing technologies or techniques.

So, the correct answers are options a) It must be new, b) It must be useful, e) It must be easy to replicate and f) It must be based on widely-used technology.

The complete question is -

Transgenic organisms are patentable. Select the conditions that a transgenic organism must satisfy in order to be patented.

a) It must be new.

b)It must be useful.

c) It must not be obvious to an expert in the field  

d) It must not be a new animal breed.

e) It must be easy to replicate.

f) It must be based on widely-used technology.

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The statement "helicobacter pylori is an acidophile that causes stomach ulcers and cancer; because it is a pathogen it is not part of our stomach microbiome" is false.

Helicobacter pylori is indeed a pathogenic bacterium that can cause stomach ulcers and is associated with certain types of stomach cancer. However, it is important to note that H. pylori can be part of the stomach microbiome in some individuals.

The human microbiome refers to the collection of microorganisms, including bacteria, viruses, fungi, and other microbes, that inhabit our bodies. The stomach, despite its acidic environment, can still harbor certain microorganisms, including H. pylori, in some individuals.

In fact, H. pylori is estimated to colonize the stomachs of about half of the world's population. It has a remarkable ability to survive in the highly acidic environment of the stomach by producing an enzyme called urease, which helps neutralize the acidity in its vicinity. This adaptation allows H. pylori to establish and persist in the stomach, leading to chronic infections that can have harmful effects on the host.

While H. pylori is often associated with disease, it is not always pathogenic. Many individuals can carry H. pylori in their stomachs without experiencing any symptoms or adverse health effects. The presence of H. pylori in the stomach is influenced by various factors, including geographical location, socioeconomic status, and individual host factors.

Therefore, it is incorrect to state that H. pylori is not part of our stomach microbiome. In certain individuals, it can be a part of the natural microbial community present in the stomach, although it has the potential to cause diseases such as ulcers and certain types of cancer.

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The study may explore factors that contribute to lying behavior, such as personality traits, situational factors, and social norms, and it may examine the psychological and social consequences of lying, both for the liar and for others who are affected by the deception.

Ultimately, the goal of such a study would be to gain a better understanding of the complex phenomenon of lying and to develop strategies for reducing dishonesty and promoting honesty in different domains of life.

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The accurate statement about Ralph and Harry being identical twins who were raised apart and reunited as adults is they may be more alike than identical twins raised together, share many personality and behavioral traits, and more similar than fraternal twins raised together. Thus, the correct answers are A, B, and C.

Ralph and Harry, being identical twins, do share many personality and behavioral traits due to their shared genetic makeup. They are more similar than fraternal twins raised together. However, it's not guaranteed that they are more alike than identical twins raised together, as environmental factors also play a significant role in shaping personality and behavior. The study of identicаl twins sepаrаted since birth аnd rаised by different fаmilies (аdoption studies), аnd so аssumed thаt similаrities, if found аny, must be those thаt аre heаvily influenced by а person's genetic heritаge.

Thus, the correct answers are A, B, and C.

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PAMPs (Pathogen-Associated Molecular Patterns) and PRRs (Pattern Recognition Receptors) play crucial roles in microbe recognition and phagocytosis by the immune system.

The correct statements regarding their functions are as follows:

In summary, PAMPs are signal molecules found on microorganisms, and they aid in pathogen recognition. PRRs are constitutively expressed on immune cells, allowing them to detect PAMPs. Certain molecules like peptidoglycan, LPS, and double-stranded RNA are recognized as PAMPs since they are absent in eukaryotic cells.

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The energy expenditure while running around the track at 8 MET is 6.49 Kcal*min⁻¹

The rate of energy expenditure of an individual with a body mass of 52 Kg and resting O₂ consumption is 162.2 ml*min-1.

To calculate the energy expenditure while running around the track at 8 MET, we can use the formula:

Energy expenditure (Kcal/min) = METs x body weight (kg) x 3.5 / 200

Substituting the values, we get:

Energy expenditure (Kcal/min) = 8 x 52 x 3.5 / 200

Simplifying this equation, we get:

Energy expenditure (Kcal/min) = 6.49

Therefore, the answer is option b) 6.49 Kcal*min⁻¹. This means that the individual will burn approximately 6.49 Kcal per minute while running around the track at 8 METs.

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The most likely result of adding nucleotides lacking a hydroxyl group at the 3' end to a PCR reaction instead of dNTP would be that no additional nucleotides would be added to a growing strand containing that nucleotide (option b).

During the polymerase chain reaction (PCR), DNA synthesis occurs through the action of DNA polymerase enzyme, which adds nucleotides to the growing DNA strand. Nucleotides contain three components: a phosphate group, a sugar (deoxyribose), and a nitrogenous base. The hydroxyl group (-OH) at the 3' end of the sugar is crucial for DNA synthesis.

In PCR, dNTPs (deoxyribonucleotide triphosphates) serve as the building blocks for DNA synthesis. They have a hydroxyl group at the 3' end, which is necessary for the formation of phosphodiester bonds between nucleotides.

If nucleotides lacking a hydroxyl group at the 3' end are added to the PCR reaction instead of dNTPs, they cannot participate in the formation of phosphodiester bonds with the growing DNA strand. As a result, no additional nucleotides would be added to the growing strand containing that nucleotide. The absence of the hydroxyl group prevents the linkage of nucleotides, effectively terminating elongation at that point.

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A. Based on the information provided, it is not possible to determine whether Genetic Condition One is a dominant or recessive trait.

A dominant trait is expressed when at least one copy of the gene is present, while a recessive trait is only expressed when two copies of the gene are present. However, the mode of inheritance of Genetic Condition One is not specified, so we cannot make a definitive conclusion. It is possible that the trait is dominant, recessive, or even X-linked. B. Again, without more information, we cannot determine with certainty whether Jan is homozygous dominant, heterozygous, or homozygous recessive for Genetic Condition One. However, we can make some educated guesses based on the prevalence of the condition in the population. If Genetic Condition One is a rare trait, it is more likely that Jan is homozygous recessive, as this would be the only way for her to inherit the condition. If the trait is more common, it is possible that Jan is either heterozygous (carrying one copy of the gene) or homozygous dominant (carrying two copies of the gene). However, without more information on the prevalence and inheritance pattern of Genetic Condition One, we cannot say for sure which genotype Jan has.

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Inhibiting ganglioside GM1 on respiratory epithelium and increasing cell CAMP levels may reduce cholera symptoms, as may inhibiting secretion systems. Blocking intestinal cell membrane ganglioside GM1 might be less effective.

Potential efficacy:

Blocking respiratory epithelium ganglioside GM1

Cellular CAMP increase

Probably restrict:

Blocking Vibrio cholera type III secretion

Blocking Vibrio cholera type IV secretion

Blocking Vibrio cholera type II secretion

Limits unlikely:

Blocking intestinal cell membrane ganglioside GM1

Explanation: Vibrio cholerae causes cholera, and blocking its processes reduces symptoms.

Blocking respiratory epithelium ganglioside GM1 may reduce cholera symptoms. Ganglioside GM1 is a receptor for Vibrio cholerae toxin, hence inhibiting its interaction with the respiratory epithelium prevents toxin binding and harm.

Increasing cell CAMP levels may also work. CAMP regulates cellular activities such intestinal ion transport. CAMP increases to combat the poison and restore ion equilibrium.

Blocking Vibrio cholerae type III, type IV, and type II secretion systems may reduce cholera symptoms. These secretion systems release bacterial virulence factors. Blocking them reduces the bacterium's harm and infection.

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The significant difference in economic growth between South Korea and North Korea can be attributed to the difference in institutional frameworks.

South Korea has inclusive institutions, which are characterized by property rights protection, rule of law, and equal opportunities, while North Korea has extractive institutions, which are characterized by authoritarianism, lack of property rights protection, and a highly centralized economy. Inclusive institutions provide a conducive environment for economic growth and innovation, while extractive institutions hinder economic progress by limiting individual freedoms and stifling entrepreneurship.

Therefore, option d) - South Korea has inclusive institutions while North Korea has extractive institutions - is the most appropriate answer to the question. The quality of agricultural land cannot be the primary determinant of the economic growth of a country as many other factors such as institutions, technological advancements, and market structures also play significant roles.

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The effects of the carbon dioxide cycle on the Earth's temperature are complex and interconnected, and it is crucial to take steps to mitigate greenhouse gas emissions and prevent further warming.

If the Earth were to warm up a bit, the carbon dioxide cycle would have several effects. The ice caps would start to melt, which would initially cool the Earth, but as they continue to melt, it would lead to a rise in sea levels.

More evaporation and rainfall would occur, which would increase the atmospheric CO2 levels, leading to a stronger greenhouse effect. This could result in higher temperatures, more extreme weather events, and negative impacts on ecosystems and human societies.

Additionally, if the Earth warms too much, the oceans may begin to evaporate, resulting in a runaway greenhouse effect similar to what has occurred on Venus.

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BERT would use his striatum when learning information that involves reward-based learning, reinforcement, or decision-making processes.

The striatum is a crucial part of the brain's basal ganglia and plays a significant role in reward-based learning, reinforcement, and decision-making processes. BERT, which stands for Bidirectional Encoder Representations from Transformers, is a language model based on the Transformer architecture. While BERT is an artificial neural network and does not have a physical brain, we can metaphorically associate the striatum with the corresponding computational processes performed by BERT during learning.

When BERT is trained on tasks involving reinforcement learning or decision-making, the computational processes within BERT that simulate these processes can be considered analogous to the role of the striatum in the brain. These processes involve assessing and assigning values to different choices, evaluating rewards, and optimizing decision-making strategies.

In the context of language learning, BERT can utilize its "striatum-like" processes to learn the associations between words, phrases, and contextual information. By training on large amounts of text data, BERT learns to encode semantic and syntactic relationships, predict missing words, and understand the meaning of words within their respective contexts.

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Muscles sizes and their correct terms are as follows;

minimus,  Smallest muscle

minor,     small muscle

longus,    Long muscle

maximus   Largest muscle

major        large muscle

brevis      Short muscle

The vastus maximus is the largest muscle in the thigh.

The biceps brachii is a long muscle in the upper arm.

The soleus is a short muscle in the calf.

And the palmaris brevis is the smallest muscle in the hand.

The above answer is in response to the full question;

Match the terms used in naming muscles according to size.

minimus, abdominis, longus,  maximus, minor, medius, minorand brevis

 large, largest, long, small, smallest  short.

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The answer is (a)2.5 x 10^8 cells/mL. (b) 6.25 x 10^7 cells/mL x hour. (c) nutrient I

(a) The maximum population density in cells/mL for the culture can be estimated by finding the highest point on the graph. This appears to be around 2.5 x 10^8 cells/mL.

The growth of the bacterial population is prevented by the depletion of one or both of the nutrients, I and II.

When one of the nutrients becomes limiting, the bacteria are unable to continue growing at their previous rate, and growth slows down or stops entirely.

(b) To calculate the growth rate between hours 2 and 4, we need to find the slope of the curve during that time period.

The change in population density during this time is approximately 1.25 x 10^8 cells/mL, and the time interval is 2 hours. Therefore, the growth rate is:

1.25 x 10^8 cells/mL / 2 hours = 6.25 x 10^7 cells/mL x hour

(c) Based on the graph, it appears that nutrient I is the preferred nutrient source of the bacteria in the culture.

The growth of the bacterial population is limited by the amount of nutrient I present, and the population density levels off once nutrient I is depleted.

One advantage of the nutrient preference for an individual bacterium is that it allows the bacterium to compete more effectively for resources in an environment where multiple bacterial species are present.

By specializing in the use of a particular nutrient source, the bacterium may be able to outcompete other species that are less efficient at utilizing that nutrient.

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The E. coli bacteria can have several mutations that affect the lac operon system. One mutation inhibits the ability of RNA polymerase to bind to the lac operon. This affect the cell, (d) The cell would not be able to process lactose,

If the E. coli bacteria has a mutation that inhibits the ability of RNA polymerase to bind to the lac operon, there would be less transcription of genes involved in lactose metabolism. This means that the cell would not be able to process lactose efficiently, leading to a decreased ability to use lactose as an energy source. Without proper lactose metabolism, the cell would have to rely on other energy sources such as glucose.

This could lead to slower growth or even death of the cell if glucose is limited. In addition, lactose would not be broken down into its component sugars, which means that there would be a buildup of lactose inside the cell. This could potentially lead to osmotic stress and damage to the cell. Therefore, the ability to process lactose is essential for the survival and growth of E. coli bacteria. Therefore, option (d) "The cell would not be able to process lactose" is the correct choice.

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Sequences of DNA assembled by identifying overlaps among smaller DNA segments are known as contigs.

Contigs are contiguous sequences that are generated through DNA sequence assembly. In this process, shorter DNA fragments, often obtained through techniques like shotgun sequencing, are aligned and overlapped based on shared regions of similarity.

By identifying and aligning these overlaps, bioinformatics algorithms and software can reconstruct the original DNA sequence by merging the smaller fragments into longer contiguous sequences. Contigs serve as valuable building blocks in genome sequencing and assembly projects, allowing scientists to piece together the puzzle of a larger DNA sequence.

Contig assembly provides insights into gene organization, functional elements, and evolutionary relationships, enabling further analysis and interpretation of the genetic information encoded within the DNA.

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Answer:

More quickly replenished

Answer:

.

Explanation: