Researchers collected data about the heart rates of humans aged 5 to 90 years. They represented the data in a graph. Simple correlation graph Which statement is the best explanation of the pattern in the data? A. The data show cause but not correlation between age and heart rate. B. The data show neither correlation nor cause between age and heart rate. C. The data show a correlation between age and heart rate. D. The data show that increasing age causes an increase in heart rate.
Answers
Scatter plots express the correlation between variables, if there is one, through the pattern of points. If there is a correlation, it can be positive or negative. C) The data show a correlation between age and heart rate.
What is the scatter plot?A scatter plot is a graphic tool that represents the existing relationship between two variables.
This representation is set in a cartesian graph, placing one of the variables on the horizontal axis and the other variable on the vertical axis.
The pattern of points intersection can show the relationship between the two variables.
Directly proportional relationship ⇒ while one of the variable values increases, the other variable values increase as well.- High positive correlation ⇒ points are too close to each other
- Low positive correlation ⇒ points are separated from each other
Inversely proportional relationship ⇒ as one of the values of the variables increases the values of other variable decreases.- High negative correlation ⇒ points are too close to each other
- Low negative correlation ⇒ points are separated from each other
No relationship ⇒ There is no tendency in the dispersion of the points. There is a homogeneous cloud. No correlation can be established between variables.Variables in the exposed example are,
Independent variable ⇒ heart rateDependent variable ⇒ AgeWe can see that the older the person is, the fewer beats per minute they express. On the contrary, the younger the person is, the more beats per minute are recorded.
This is a high negative correlation in which points are too close to each other.
Options,
A. The data show cause but not correlation between age and heart rate. Not correct. Data shows a clear correlation between variables.
B. The data show neither correlation nor cause between age and heart rate.
Not correct. Data shows a clear correlation between variables.
C. The data show a correlation between age and heart rate.
Correct. There is a negative correlation between variables.
D. The data show that increasing age causes an increase in heart rate.
Not correct. The older the person is, the fewer heart beats per minute.
Statement C is the best explanation of the pattern in the data. The data show a correlation between age and heart rate.
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Related Questions
What mode of nutrition distinguishes animals from fungi, both of which are heterotrophs?.
Answers
Answer:
Heterotrophic nutrition
Explanation:
Heterotrophic nutrition is known to be the mode of nutrition in which certain organisms are dependent on other organisms in order to survive. Organisms that cannot prepare their own food and have to depend on other organisms for their survival are known as heterotrophs. Common examples of heterotrophs include animals, fungi, and bacteria.
Human blood types are, in part, determined by the abo system. The allele frequency for blood type ia is 0. 3, and ib is 0. 1. What is the frequency of b-type individuals in a population?.
Answers
The frequency of type B individuals in the population is 0.6. Human blood types are partially determined by a blood group subscription system.
A system that classifies human blood into different types based on the presence or absence of certain markers on the surface of red blood cells. There are basically four the main blood types: A, B, O, and the AB. The ABO system is considered the most important blood group system in transfusion medicine because of severe hemolytic transfusion reactions and, to a lesser extent, hemolytic disease in newborns. . Her ABO blood group system in humans shows codominance. This system consists of three alleles A, B, and O. Since both A and B are dominant over O, an A blood type can have an AA or AO genotype.
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Match the chemical mediator with its description.
1. Surface chemicals
2. Histamines
3. Kinins
4. Interferons
5. Prostaglandins
6. Leukotrienes
Answers
Due to the fact that they are preformed (found in granules) and released quickly and early during inflammation, histamine and serotonin are important mediators of inflammatory responses.
Compile a list of chemical mediators and their descriptions.Lysozymes, which inhibit microbial growth or kill microbes, are surface compounds.Histamines: an amine secreted by mast cells, platelets, and basophils that dilate blood vesselsKinins are plasma protein-derived polypeptides that trigger smooth muscle contraction.Interferons: cellular proteins that prevent the growth of virusesSmooth muscle relaxation and vasodilation are caused by the lipid group known as prostaglandins.A class of lipids called leukotrienes causes smooth muscle contraction.To learn more about chemical mediators refer to:
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what function mutations in a gene that encodes a protein necessary for apoptosis could result in cancer
Answers
If mutations in the genes in apoptotic pathway blocked apoptosis then a cell with such damage could continue to divide and lead to cancer.
How can alterations in the genes that produce apoptosis-related proteins affect the development of cancer?Apoptosis has a preventive role in eradicating a cell that may contribute to cancer by being triggered by the p53 protein when a cell has significant DNA damage.
Single amino acid changes in p53 caused by TP53 gene mutations make the protein less functional. Without p53, cell proliferation is not efficiently controlled, and DNA damage can build up in cells. Such cells may continue to divide uncontrollably, resulting in the development of tumors.
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Prophase, metaphase, anaphase, and telophase chromosomes
Answers
Seeds are a derived character of the spermatophytes. All of the plants in this clade reproduce using seeds. However, embryo formation is also a trait of the spermatophytes. Do you think true water-conducting tissue is a derived character of either embryophytes or green algae? why or why not?.
Answers
Spermatophytes are defined as plants that produce and bear seeds. Angiosperms and gymnosperms are among them. Spermatophytes include plants including palm trees, orchids, and cycads.
Spermatophytes, which include liverworts and hornworts, are classified as embryophytes because they generate embryos. Green algae are another type of plant that lives in water.
Since green algae already live in water and have water in contact with every part of their body, they do not necessarily have xylem tissues, which are used to transport water.
Contrarily, embryophytes have xylems and other vascular tissues and networks for delivering water to plant parts and structures that are located on soil and are not in close proximity to a water source.
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can somebody please help me with this? (1, 4ab & 6) thank you
Answers
Question 1:
Red fox --> Rabbit
Red fox --> Berries
Rabbit --> Grasses
Hawk --> Red fox
Hawk --> Squirrel
Hawk --> Mouse
Hawk --> Rabbit
Squirrel --> Tree seeds
Question 4a:
Putting out bird feeders make the birds have to find there own food in the cold weathers, if they don't find any, they will be starve to death.
Question 4b:
The falcon will all be dead or become someone pet, it is because they are really popular, why won't people take them ( HUMAN CRUELTY )
Question 6:
[tex]9\sqrt{2]{3}[/tex] = [tex]x_{N*}[/tex]
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How is the path of light affected by the density of the medium it travels through?
manipulated variable
responding variable
controlled variable
Answers
The path of light affected by the density of the medium it travels through can be considered as the responding variable (option b).
What is the responding variable?The responding variable also called the dependent variable is any experimental condition that changes in response to the independent variable, which may be considered the manipulated variable that leads to a cause effect relationship.
Therefore, with this data, we can see that the responding variable is generally called the dependent variable and it changes as the independent variable modifies its values in an experimental procedure.
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cytokines are protein-based chemical messengers that allow for communication between cells of the immune system.
Answers
Cellular immunity is made up of cells that identify antigens and produce antibodies against them. Cytokines are protein-based chemical messengers that allow immune system cells to communicate with one another. Cytokine storms have a deleterious influence on human health.
What are the functions of cytokines in the immune system?Cytokines are tiny proteins that regulate the development and function of other immune system and blood cells. They alert the immune system to start working when they are released. Cytokines influence the formation of all blood cells and other cells that aid in the immunological and inflammatory responses of the body.
They are tiny, soluble proteins that play a role in immune system regulation. They are part of innate immunity and respond to infection in an adaptive manner. They are activated in response to certain stimuli, such as microorganisms.
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What is the name of the scientist that developed the classification system we use today?.
Answers
Was the scientist
Carl Linnaeus
Explanation:
In the 18th century, Carl Linnaeus published a system for classifying living things, which has been developed into the modern classification system.
What are the action and reaction forces at work in this picture?
(the picture is a flower pot and book stacked next to each other)
a
friction is pushing up and gravity is pulling down
b
gravity is pulling the book downward
c
the flower vase is pushing up and gravity is pulling down
d
the book is pushing on the table and the table is pushing on the book
Answers
Answer:the answer is c
Explanation:
What might have been the first
word out of Darwin’s mouth at the
end of his research travels?
Answers
Diversity is the first word out of Darwin's mouth at the end of his research travels.
How does evolution explain diversity?
The interactions between organisms and environment and the consequence of interactions over long periods of time explains duversity and evolution.
Darwin discovered the natural selection that explains the development of variety of organisms from a single common ancestor. The change in the environment provides a high variability of alleles that helps in evolving the new environment.
What is the Darwin's theory of evolution?
The process by which change in organisms due to the change in behavioral and physical traits.
Due to the change in environment individuals develop adaptive traits in order to survive and reproduce. These adaptive traits are advantageous to the upcoming population.
Darwin proposed that species change over time and new species come from pre-existing species sharing a common ancestor.
Hence, Darwin discovered diversity at the end of his research travels.
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choose all activities that are attributed to the parasympathetic division of the ans.
Answers
The parasympathetic division contracts easy muscle of the bladder wall and relaxes urethral sphincter these are activities that are attributed to the parasympathetic division.
The sympathetic department dilates bronchioles (tubes in lungs), produces goosebumps, and will increase coronary heart rate.The parasympathetic frightened gadget is likewise called the 'relaxation and digest' gadget because it capabilities to conserves the frame's herbal activity, and relaxes the person as soon as an emergency has passed.
Some of its sports encompass stimulating digestion, activating metabolism, and assisting the frame relax.Body capabilities inspired via way of means of the parasympathetic frightened gadget (PSNS) encompass arousal, salivation, lacrimation, urination, digestion, and defecation. The PSNS usually makes use of acetylcholine as its neurotransmitter.
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During the first step of cellular respiration, glucose is converted into (choose 2).
Answers
Glycolysis, the first stage of cellular respiration, occurs in the cytoplasm of your cells. This results in the division of a glucose molecule into two pyruvate molecules (pyruvic acid).
What is the first step in cellular respiration's conversion of glucose to?Glycolysis, the first phase of cellular respiration, happens in the cytoplasm. In this step, enzymes convert a glucose molecule into two pyruvate molecules, releasing energy that is then transferred to ATP.
What is the initial conversion of glucose?Fructose-1,6-bisphosphate is created from glucose in a series of processes that each require two ATP. The unstable fructose-1,6-bisphosphate splits into two three-carbon molecules, DHAP and glyceraldehyde-3-phosphae, at this point.
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What process occurs when
a virus transfers DNA from
one bacteria to another?
A. transformation
B. conjugation
C. transduction
Answers
What process occurs when a virus transfers DNA from one bacteria to another?
A. transformationB. conjugationC. transductionAnswer : C. TransductionExplanation :Transduction is the process in which a virus transfers DNA from one bacteria to another. These viruses are mainly called as bacteriophages. They infect bacterias to produce more viruses.
Answer:
c) Transduction
Explanation:
The process which occurs when a virus transfers DNA from one bacteria to another is known as transduction.
These can be done by few viruses like bacteriophages. Hence, option (c) is the correct answer.
(20) which early south american culture created elaborate desert geoglyphs depicting animals, plants, human-like figures, and geometric designs?
Answers
Around 100 B.C., early south american culture produced intricate desert geoglyphs that featured animals, plants, human-like figures, and geometric patterns. The Nazca style evolved from the earlier Parica's art.
Which of the following is located in Mesoamerica, the region of ancient civilization?Costa Rica, Nicaragua, Honduras, El Salvador, Guatemala, Belize, and central to southern Mexico make up the modern nations that make up the historical region of Mesoamerica.
What specialized the Aztecs?The Aztecs are renowned for their art, architecture, agriculture, and land. In addition to creating calendars and temples, they also learned how to write. Additionally, they had a reputation for being ruthless and fierce.
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Please help! 100 points
Answers
Answer:
i need help to with this
Explanation:
Prior to the formation of the cell theory, it was thought that cells could arise through
spontaneous generation. Explain why the cell theory is a theory instead of a law?
Answers
Organism a is eukaryotic, unicellular, and lacks a cell wall. Organism b is eukaryotic, multicellular, has cell walls, and is autotrophic. In which kingdoms should these organisms be classified?.
Answers
The presence of multicellular bodies, a heterotrophic source of nourishment, eukaryotic cells, and cells without a cell wall distinguish the Kingdom Animalia among them.
All creatures have been categorized into five Kingdoms using the five Kingdom system. The presence of a multicellular organism, a heterotrophic mode of nourishment, eukaryotic cells, and cells without a cell wall distinguish the Kingdom Animalia among them.
Bacteria and unicellular prokaryotic BGA are members of the kingdom Monera. Algae, all protozoa, and eukaryotic unicellular creatures are all members of the kingdom Protista. Multicellular heterotrophic eukaryotes with a chitinous cell wall are included in the kingdom fungus. Kingdom Animalia contains heterotrophic species without a cell wall, whereas kingdom Plantae has autotrophic organisms with a cellulose cell wall.
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The diameter of a carbon atom is 0. 000 000 000 154 m. What is this number expressed in nanometers?.
Answers
According to the definition of scientific notation, the value of the number 0.000 000 000 154 m is 1.541010 m.
Scientific notation explained
Using powers of base 10, scientific notation is a rapid way to represent a number. This notation is intended to make it simple to represent extremely large or extremely small numbers.
The figures are represented by a product:
a×10ⁿ
where:
an is a real number that is more than or equal to 1 and less than 10, and if it is a non-integer number, a decimal point is inserted after the first digit.
A full number, or n, is what is referred to as an exponent or order of magnitude. represents how many times the decimal point has been moved. It is always an integer, and shifting it to the left makes it positive and shifting it to the right makes it negative.
0.000 000 000 154 m in scientific notation.
In this instance, the steps are as follows in order to write the number 0.000 000 000 154 in scientific notation:
As many spaces are added to the right of the decimal point till it reaches the right of the first digit. The value of an in the preceding phrase will be this number. Then a = 1.54
The exponent of the base 10, which is the number of spaces the decimal point advances, is expressed as 10. The decimal point is shifted to the right, making this a negative number with a value of n = 10.
Therefore, the value of 0.000 000 000 154 m is 1.541010 m in
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What is the correct sequence of renal tubule segments through which filtrate would flow?
- Distal tubule, ascending limb of nephron loop, descending lim of nephron loop, proximal tubule
- Collecting duct, proximal tubule, descending limb of nephron loop, ascending limb of nephron loop, distal tubule
- Proximal tubule, ascending limb of nephron loop, descending limb of nephron loop, distal tubule
- Proximal tubule, ascending limb of nephron loop, descending limp of nephron loop, distal tubule
- Proximal tubule, descending limb of nephron loop, ascending limb of nephron loop, distal tubule
Answers
The correct sequence of renal tubule segments through which filtrate would flow is:
Glomerulus →Proximal convoluted tubule →Descending limb of nephron loop →Ascending limb of nephron loop →Distal convoluted tubule →Collecting duct.
A proximal tubule (convoluted and straight portions), a transitional tubule, a distal convoluted tubule (straight and convoluted portions), a CNT, and a CD comprise the renal tubule. The loop of Henle is made up of the straight portion of the proximal tubule, this same thin descending and ascending limbs, and the creamy ascending limb, that also includes the macula densa. The CD system is linked to the nephron via the CNT.
The renal tubules are surrounded by an epithelium, which is made up of a single layer of cells that is anchored to the basement membrane. The epithelial cells have numerous transport functions and structural adaptations to their specific roles. A junctional complex consisting of the a tight junction, an adherens junction, as well as, at some sites, a desmosome connects them apically.
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photosynt h. Write short notes on: (i) Pulmonary circulation (ii) Fertilization 11. (ii) Systemic circulation (iv) Vegetative reproducti
Answers
Pulmonary Circulation and Systemic Circulation are the types of circulation
1. Pulmonary Circulation:
Pulmonary circulation moves blood between the heart and the lungs. It transports deoxygenated blood to the lungs to absorb oxygen and release carbon dioxide.
The oxygenated blood then flows back to the heart. Systemic circulation moves blood between the heart and the rest of the body. It sends the oxygenated blood out to cells and returns deoxygenated blood to the heart.
2. Fertilization:
Fertilization is a Reproductive process in which a male sex cell (sperm) unites with a female sex cell (egg). During the process, the chromosomes of the egg and sperm will merge to form a zygote, which will divide to form an embryo.
3. Systemic Circulation:
In the systemic loop, oxygenated blood is pumped from the left ventricle of the heart through the aorta, the largest artery in the body.
The blood moves from the aorta through the systemic arteries, then to arterioles and capillary beds that supply body tissues. Here, oxygen and nutrients are released and carbon dioxide and other waste substances are absorbed.
4. Vegetative reproduction:
Vegetative reproduction is any form of asexual reproduction occurring in plants in which a new plant grows from a fragment or cuts off the parent plant or specialized reproductive structures, which are sometimes called vegetative propagules.
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The current Question is:
Write short notes on (i) Pulmonary circulation and (ii) Fertilization (ii) Systemic circulation (iv) Vegetative reproduction.
how does eukaryotes regulate gene expression, and how are these approaches different than bacterial gene expression?
Answers
Gene expression in eukaryotic cells is regulated by repressors and also by transcriptional activators. Bacterial gene expression occurs within the cytoplasm of a cell due to the lack of a defined nucleus.
How do eukaryotes regulate gene expression?Bacterial gene expression (both transcription and translation) occurs within the cytoplasm of a cell due to the lack of a nucleus; therefore, the DNA is freely located within the cytoplasm. Eukaryotic gene expression takes place in the nucleus (transcription) and cytoplasm (translation) both.
Gene expression occurs in two essential steps that are : transcription and translation. In bacteria, these two processes are tightly coupled in time and space, and thus are highly regulated.
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If a space shuttle is returning from space and entering the earth's atmosphere, what is the order of atmospheric layers the space shuttle will pass through before it lands?.
Answers
If a space shuttle is returning from space and entering earth's atmosphere, then the order of layers of the atmosphere that the space shuttle will pass is troposphere, stratosphere, mesosphere, ionosphere.
What is known as atmospheric layers?The atmosphere is divided into five layers depending on the distance from earth. The atmospheric layer nearest to the earth is troposphere and then stratosphere on which ozone is present.
Each atmospheric layer differs in the presence of gases, temperature and pressure. Jet aircrafts fly in the stratosphere as it is very stable. Ozone layer absorbs harmful rays from the Sun.
Meteors burn up in the mesosphere. The thermosphere is a layer with auroras and space shuttle orbits here.
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Stomata
Chloroplast
fom layers of leaves
layer that
the
internal cells packed together to expose the
greatest number to
on the lower epidermal
move through
inside the
where photosynthesis occurs
Answers
Numerous chloroplasts are present in the cells of the leaf's mesophyll. Mesophyll cells in leaves, which are the tissue between the upper and lower epidermis, are well adapted to perform extensive photosynthesis.
What is the stomata's function ?
Almost all terrestrial plants use the same pores, known as stomata, to take in carbon dioxide and release oxygen since this evolutionary invention is so essential to plant identity. Microscopically small and essential for photosynthesis are stomata. On the plants' surface, they are numerous and swarm. They have a lot of chloroplasts, the photosynthesis sites, which accounts for this high concentration.
In order to support plant development and crop productivity, chloroplasts release oxygen and produce energy through photosynthesis.
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Within a cell, the amount of protein made using a given mrna molecule depends partly on.
Answers
Within a cell, the amount of protein made using a given mRNA molecule depends partly on the concentration of ribosomes and other cellular machinery involved in protein synthesis. Protein synthesis is the process by which cells translate the genetic information encoded in mRNA molecules into the sequence of amino acids that make up a protein.
This process requires the participation of several different cellular components, including ribosomes, tRNAs, and enzymes. Ribosomes are the molecular machines that catalyze the formation of peptide bonds between amino acids, tRNAs are the molecules that carry individual amino acids to the ribosomes, and enzymes are the proteins that help to facilitate the reaction.
The amount of protein that can be made using a given mRNA molecule is limited by the availability of these components. If the concentration of ribosomes and other machinery is low, then the rate of protein synthesis will be slowed, and less protein will be produced. On the other hand, if the concentration of these components is high, then the rate of protein synthesis will be increased, and more protein will be produced.
Overall, the amount of protein made using a given mRNA molecule depends partly on the concentration of ribosomes and other cellular machinery involved in protein synthesis. By controlling the availability of these components, cells can regulate the rate of protein synthesis and the amount of protein produced.
which one of the following statements about the redox reactions of the electron transport chain is correct?
Answers
The passage of protons through a membrane is inversely correlated with the redox reactions in the electron transport chain.
Regarding the electron transport chain, which of the following propositions is true?The electron transport chain's main objective is to harness the energy of electrons traveling along this pathway in order to make ATP and water. Regardless of the presence or absence of oxygen, the electron transport chain will function.
What is the electron transport chain's (ETC) official position?Carbon dioxide is the principal electron transport chain byproduct. The electron transport chain creates ATP and water. Similar amounts of ATP are generated by the Krebs cycle and the electron transport chain.
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_____________ means loss of muscle function, loss of sensation, or loss of both muscle function and sensation.
Answers
The study of the nerve cell is called nervous tissue. The nerve cell is made up of cyton, dendrite, axon, and synaptic ending.
What is voluntary muscle?Those actions which you can control is called voluntary muscle. For example - moving of hand.Spinal nerves serve as the paths of communication between the spinal cord and specific regions of the body. Roots refer to the bundles of axons that serve to connect each spinal nerve to a segment of the spinal cord via smaller bundles of axons called root lets.The ventral root also called the anterior root and the associated rootlets contain axons of motor neurons. These motor neurons of the ventral root conduct nerve impulses from the Central Nervous System to effector organs. Muscles and glands are the effector organs. As these effector organs receive motor information, voluntary movements are generated.If the ventral root of the spinal nerve were cut, the effector organs will not get the motor information and no voluntary movements will be generated.To learn more information about the nerve tissue, refer to the link:-
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in order for selection to act select one: a. variation must be heritable b. mutations must occur c. populations must be small d. reproduction must be sexua
Answers
In order for Natural selection to act - variation must be heritable.
The correct option is a.
Natural selection will happen if three criteria are satisfied, according to Darwin's hypothesis. These circumstances, which are shown in bold above, compete with one another for survival, variation, and inheritance. According to some, these circumstances are both essential and sufficient for natural selection to take place.
Heritable variation serves as the initial source of variation for natural selection. There must already be variation in a characteristic for natural selection to work on it, and that variation must be transmissible to offspring.
The relative proportions of heritable variants in a population are changed over numerous generations to quantify evolution. Only heritable qualities can be changed through natural selection. Natural selection and heritability do not apply to acquired characteristics.
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The taxi is moving with reference to
Monument Circle
. For each leg of the trip, the taxi’s
average speed
stays the same, but its
average velocity
changes.
Answers
The correct statement is: The taxi is moving with reference to A) Monument circle. For each leg of the trip, the taxi's A) Average speed stays the same, but its B) Average velocity changes. so the speed stays the same.
What is speed?
The concept of speed means "the rate at which a thing travels." Speed is the rate of movement of an object over a predetermined distance. A fast-moving object travels far in a short amount of time and moves quickly. On the other hand, a slow-moving object travelling at a low speed covers a comparatively small distance in the same amount of time. An object with zero speed is one that is completely immobile.
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