In an ecosystem, there are two color varieties within a species of toads: brown and green. Over 50 years, the proportion of the
population that is green increases from 20% to 50%. Which statement is the most likely to explain this change? (1 point)
O Pollution caused a decrease in the proportion of brown toads.
O The environment changed such that toads that can jump higher into the trees to survive better.
O The environment changed such that green toads can blend into their surroundings better.
O A disease caused a decrease in the proportion of brown toads.
Answer:
Explanation:
The most likely explanation for the increase in the proportion of green toads in the population is that (c) the environment changed such that green toads can blend into their surroundings better. This increased their chances of survival and reproductive success, leading to a higher proportion of green toads in the population over time.
When the ventricles are relaxed, the ______ are loose and there is no resistance to the flow of blood from atrium to ventricle.
When the ventricles are relaxed, the atrioventricular (AV) valves are loose and there is no resistance to the flow of blood from atrium to ventricle.
The AV valves, also known as the mitral and tricuspid valves, are located between the atria and ventricles of the heart. These valves open to allow blood to flow from the atria into the ventricles during the diastole phase of the cardiac cycle, when the ventricles are relaxed and the atria contract to push blood into the ventricles. The AV valves are supported by chordae tendineae and papillary muscles, which prevent the valves from flipping back into the atria during ventricular contraction (systole). However, when the ventricles are relaxed, the chordae tendineae and papillary muscles also relax, allowing the AV valves to open and blood to flow from the atria to the ventricles without any resistance.
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The Mule Deer Case: In 1906, President Theodore Roosevelt created the Grand Canyon National Game Preserve on the Kaibab Plateau in northern Arizona. Between 1907 and 1923, cattle (who was grazing the land) was greatly reduced, mule deer hunting was eliminated, and predators were killed. Over 800 cougars, 20 wolves (most had already been killed in the 1800s). and 7000 coyotes were trapped or shot. In response, the mule deer herd began to increase: by 1915, deer numbers were estimated at 25,000 50,000 by 1920; and 100,000 by 1923. (2 pts.) If the initial population of mule deer in 1906 was about 4000, graph the population growth between 1906 and 1923 and identify the type of growth curve. Explain the growth in mule deer populations in terms of carrying capacity after the creation of the preserve. > The initial population of Kaibab deer in 1906 was about 4000. In a preserve area of about 800,000 acres, the average deer density was one deer per 200 acres. Calculate the densities in 1015, 1920 and 1923? Graph it Predict what happened with the mule deer population after 1923 and explain the reasons for changels). B) Life table for the paine population on TWU cangpust. da u La Tua 6-18 1-2y 142 198 110 LI ..... Hy 58 1 27 4.Sy 5-69 5 Fill in the columns in the above table that help plot the survivorship and mortality curves. Use the explanations for calculations starting on pages 176-177 of your textbook. Plot the survivorship and mortality curves for this population based on the data in your table. Hand drawings of the graphs are not acceptable. Use Excel. C) Read the interaction scenarios below and decide whether the interaction is competition, commensalism, predation, parasitism, or mutualism. Mention which ones are symbiotic. (1.25 pts.) • Scenario A: You are camping in the meadow. A female mosquito smells you. She finds a piece of exposed skin, drills her proboscis through your skin to find a capillary, and sucks up your blood. . Fill in the columns in the above table that help plot the survivorship and mortality curves. Use the explanations for calculations starting on pages 176-177 of your textbook. Plot the survivorship and mortality curves for this population based on the data in your table. Hand drawings of the graphs are not acceptable. Use Excel C) Read the interaction scenarios below and decide whether the interaction is competition, commensalism, predation, parasitism, or mutualism. Mention which ones are symbiotic. (1.25 pts.) Scenario A: You are camping in the meadow. A female mosquito smells you. She finds a piece of exposed skin, drills her proboscis through your skin to find a capillary, and sucks up your blood Scenario B: The next day you notice some colorful flowers. A butterfly walks over a brightly blooming inflorescence. It finds nectar stored inside the flowers and suck it. In the process it gets pollen smeared on its body. When it is finished hunting for nectar. it flies to another flower of the same species to find more nectar. Some of the pollen gets scraped of onto the second flower. Scenario C A hawk soars over the meadow. Its sharp eyes spot a field mouse. The hawk drops into a steep dive and catches the mouse in its talons. Then it flies away. to feed the dead mouse to its nestlings Scenario D: On the edge of the meadow there is a large tree. Growing on the tree's bark is a circular gray-green lichen, about 6 inches in diameter. The lichen is using the tree for habitat. The trunk gets sun and the lichen isn't competing with other organisms for space. The tree hardly notices the lichen; it isn't eating the tree or taking resources from the tree. Scenario E: In the wetter part of the meadow there is standing water. In the shallow water, a cattail (a tall grassy plant) and a rush (another kind of grassy plant) are both growing. The cattail and the rush both prefer the same kind of habitat, both need sunlight, and both are sucking up nitrogen and other nutrients from the marsh mud. O 6 148 D Dashboard Calendar To Do Notifications Inbox
The deer density in 1923 was one deer per 8 acre. Pet capita rate of growth of deer population is influenced by carrying capacity (K).
Population distribution is the spatial arrangement of individuals of a given species in a particular area at a given time. They may be influenced by factors like resource availability, climate, topography, vegetation, etc. The growth of mule deer population in terms of carrying capacity can be explained with the help of logistic growth.
In logistic growth, the per capita rate of growth of a population gets smaller as the population approaches a maximum number influenced by the number of limited resources available. This rate is known as the carrying capacity, denoted by K. The initial growth in logistic growth is exponential, where this carrying capacity first increases.
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4. Take into account the fact that Earth's populations are increasing. How could this fact
explain the differences in the cancer death rate vs. the total number of cancer deaths.
As Earth's populations increase, the number of cancer cases and cancer deaths is also likely to increase. This can result in differences between the cancer death rate and the total number of cancer deaths.
The cancer death rate is calculated by dividing the number of cancer deaths by the total population and then multiplying by a factor of 100,000 or 1,000,000. As the population grows, the number of cancer deaths may also increase, but the death rate may remain relatively stable if the growth in the number of deaths is proportional to the growth in population.
On the other hand, the total number of cancer deaths is simply the total count of all cancer-related deaths within a given time period, regardless of the size of the population. As the population increases, so will the total number of cancer deaths, even if the death rate remains stable.
Therefore, the difference between the cancer death rate and the total number of cancer deaths can be explained by the growth in Earth's populations. An increasing population may result in an increase in the total number of cancer deaths, even if the death rate remains stable.
When a chemical reaction is at equilibrium, which of the following statements is true?
A. The concentrations of reactants and products are equal.
B. The rate of the forward reaction is equal to the rate of the backward reaction.
C. The ratio of the concentrations of reactants and products equals 1.0.
D. The reaction is proceeding in the forward direction at a rate to K'eg.
E. The reaction is proceeding in the reverse direction at a rate to K'eg.
ANSWER
The answer isA
Explanation:
it is because in a chemical equilibrium forward reaction equals backward reaction.it is a reverse reaction.
Please help I dont understand this
One of the ions missing from this simulation is chloride (Cl-
) because it is not directly involved in
creating an action potential. Chloride ions’ purpose is to regulate resting membrane potential by
minimizing accidental neuron stimulation, thus triggering an action potential. Why would this
be important for the maintenance of neuron homeostasis?
Answer:
Chloride ions play a critical role in maintaining the homeostasis of neurons by regulating the resting membrane potential. By minimizing accidental stimulation, chloride ions help to prevent the initiation of an action potential unless it is necessary, thus preserving the normal functioning of the neuron. This regulation is important in maintaining the stability and proper functioning of the nervous system, ensuring that signals are transmitted only when necessary and in the correct manner. In summary, the presence of chloride ions helps to maintain the homeostasis of neurons by preventing unnecessary stimulation and ensuring proper signaling.
Explanation:
Chloride ions (Cl-) play a crucial role in the maintenance of neuron homeostasis by regulating the resting membrane potential of neurons.
What is the resting membrane potential?The resting membrane potential is the electrical potential difference across the plasma membrane of a neuron when it is not transmitting a signal. It is maintained by the selective permeability of the membrane to ions such as potassium (K+) and chloride (Cl-).
Chloride ions move in and out of the neuron, helping to balance the concentration of positively charged ions like potassium and sodium (Na+). If chloride ions are not present, the resting membrane potential may become too positive, making it easier for accidental neuron stimulation to occur and leading to an action potential when it should not occur.
This can disrupt normal neural activity and lead to problems with neuron function and communication. Therefore, the presence of chloride ions is important for the proper regulation of resting membrane potential and maintenance of neuron homeostasis.
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What must students use when summarizing an informational text? select 3 options. A casual toneinformal languageacademic languagean objective, formal tonea variety of sentence types.
When summarizing an informational text, students should use:an objective, formal tone, academic language, a variety of sentence types.
1) an objective, formal tone, as the purpose is to provide a concise and impartial overview of the text; 2) academic language, which is appropriate for a scholarly or educational setting; and 3) a variety of sentence types, as this helps to maintain the reader's interest and convey information effectively. Using a casual tone or informal language is not appropriate when summarizing informational texts, as this can detract from the credibility and professionalism of the summary. By using these three elements, students can effectively summarize informational texts in a clear, concise, and professional manner.
Question: What must students use when summarizing an informational text? Check all that apply.
Academic language
An objective, formal tone
A variety of sentence types
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What is the temperature danger zone ? What is its significance in food preparation ?
Answer: The danger zone is typically between 40°F (4°C) and 140°F (60°C). The temperature danger zone refers to the temperature range in which bacteria can multiply rapidly on food.
Explanation: The significance of the temperature danger zone in food preparation is that it represents the conditions in which bacteria can grow and cause foodborne illnesses. When food is held at temperatures within this range, bacteria can multiply at a rapid rate, increasing the risk of food contamination and the potential for foodborne illnesses.
Proper cooking and reheating temperatures are essential to kill harmful bacteria in food. Cooking foods to their recommended internal temperatures helps ensure that bacteria are destroyed and the food is safe to eat.
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after you remove the water all life is made up of mostly carbon. what makes carbon a good atom for building with?
In order to create covalent chemical bonds, carbon contained 4 electrons available. As a result, carbon atoms can build several stable connections with other tiny atoms, such as hydrogen, oxygen, as well as nitrogen.
Explain about the carbon and its properties?Carbon has a remarkable capacity to connect with a large number of other elements.
Because of its special abilities to make covalent connections with up to four different atoms, the carbon atom is ideally suited to act as the fundamental structural element, or "backbone," of macromolecules. The ability of carbon to establish stable bonds with numerous elements, including itself, is the cause. Due to this characteristic, carbon can take the form of a vast range of very massive and complicated compounds. In actuality, the number of carbon-based molecules in living organisms is close to 10 million. Plants employ carbon to create their stems and leaves which animals then eat and use for cellular growth. Gases like carbon dioxide are among the forms of carbon that are stored in the atmosphere.To know more about the carbon, here
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Animals that eat a variety of meats, fruits, and vegetables are
a
carnivores.
b
omnivores.
c
decomposers.
d
herbivores.
Answer:
The answer is B.
Explanation:
Plants do photosynthesis but not cell respiration. True or False
Answer:
true
Explanation:
Answer: False!
Explanation: Plants can do both! Plants have mitochondria and can perform cellular respiration. Plants release energy through this phase. The only time plants go through cellular respiration however, is when no sunlight is available.
How fast are you moving relative to the chair relative to the Sun?
The answer to the question of how fast you are moving relative to the chair relative to the Sun would be the same, as you and your chair are effectively moving at the same speed as the Earth.
However, if we assume that you are sitting in a chair and ask how fast you are moving relative to the Sun, the answer would depend on the reference frame. From the perspective of someone standing on the Sun, the Earth (and therefore you and your chair) is moving in an elliptical orbit around the Sun at an average speed of about 30 kilometers per second (67,000 miles per hour). From the perspective of someone standing on the Earth, you and your chair are stationary (ignoring the rotation of the Earth) while the Earth is rotating on its axis and orbiting the Sun at the same speed mentioned above.
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Keat is describing the conditions on early Earth. Which line contains an error? (4 points)
Atmosphere has low levels of oxygen, and prokaryotic cells use anaerobic respiration.
Carbon dioxide builds up, and autotrophs evolve and begin producing oxygen.
Increased nitrogen levels kill off most anaerobic cells.
Aerobic autotrophs and heterotrophs become the dominant life forms.
Line 1
Line 2
Line 3
Line 4
229771af467a5e... 1/2 | 87% + 1 H 1. List two parts of a prokaryote that are also in plant or animal cells? (2) 2. A type of bacteria that causes pneumonia is Pneumococcus. Which part of the name tells you the shape? What is a common English word that would describe the shape of this bacteria? (2) 3. Why is knowledge about cyanobacteria important? List two reasons. (2) 4. Why is knowledge about bacteria such as salmonella or e-coli important? List two reasons. (2) 5. What is the name of the process that allows bacteria to reproduce? (1)
Answer:
Two parts of a prokaryote that are also found in plant or animal cells are the cell wall and the ribosomes.
The word "Pneumococcus" tells you the shape of this bacteria. The word "coccus" is derived from the Greek word for "sphere" and it refers to the spherical shape of this bacteria. A common English word that would describe the shape of this bacteria would be "round".
Knowledge about cyanobacteria is important because they are the oldest known form of life on Earth, and they produce oxygen through photosynthesis, which is necessary for the survival of many other organisms. Additionally, cyanobacteria are an important source of biofuel.
Knowledge about bacteria such as salmonella or e-coli is important because these bacteria can cause food poisoning if consumed, and can also spread from person to person through physical contact or through contact with contaminated surfaces.
The process that allows bacteria to reproduce is called binary fission
What stage of meiosis is Mendel's law of segregation?
Mendel's law of segregation is in the phase anaphase of meiosis.
Anaphases I and II of meiosis are where Mendel's Segregation law takes place. The homologous chromosomes are sorted into two daughter nuclei with their different versions of each gene during this stage of the first meiotic division.
The first division of meiosis, during which the homologous chromosomes with their unique versions of each gene are divided into daughter nuclei, serves as the physical basis for Mendel's law of segregation. During meiosis, the two different alleles for a single gene segregate as the chromosomes divide into several gametes, resulting in each gamete acquiring one of the two alleles.
In Mendel's experiments, meiosis-induced segregation and independent assortment in the F1 generation result in the F2 phenotypic ratios that Mendel observed.
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Select the type of adjective needed to complete this sentence. The Empire State Building is one of the ________ structures in the city, but One World Trade Center is taller.
The Empire State Building is one of the superlative structures in the city, but One World Trade Center is taller.
What is an adjective?An adjective is a word that modifies or describes a noun or pronoun, providing additional information about its qualities or attributes. Adjectives can describe a wide range of characteristics, including size, shape, color, texture, and emotions, among others.
They are an important part of the English language and are used to make writing more interesting, vivid, and specific. Adjectives can be used in a variety of ways, including before a noun ("the blue sky"), after a linking verb ("the sky is blue"), or as part of a noun phrase ("the old, creaky door"). They are a fundamental part of building descriptive and engaging sentences in English.
The sentence is comparing the height of two buildings, and stating that One World Trade Center is taller than the Empire State Building. To describe the Empire State Building as one of the structures in the city, we need a superlative adjective to emphasize that it is among the tallest buildings. Therefore, the missing word is "tallest" or "taller", depending on the context.
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Select the correct answer. Simplify the following expression. (4x + 7)2 a. 16x2 - 49 b. 16x2 + 56x + 49 c. 16x2 + 28x + 49 d. 16x2 + 49.
To simplify the expression (4x + 7)2, we need to apply the formula for squaring a binomial
Step 1: Identify the values of a and b in the formula[tex](a + b)2.[/tex]
In this case, a = 4x and b = 7.
Step 2: Substitute the values of a and b into the formula and simplify.
[tex](a + b)2 = a2 + 2ab + b2(a + b)2 = a2 + 2ab + b2[/tex]
where a = 4x and b = 7.
Substituting these values into the formula, we get:
[tex](4x + 7)2 = (4x)2 + 2(4x)(7) + 72[/tex]
[tex]= 16x2 + 56x + 49[/tex]
Therefore, the correct answer is (b) [tex]16x2 + 56x + 49.[/tex]
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Which part of a scientific method does this best illustrate?
Answer:
Making an observation and asking a questions
A reaction in which a , b , and c react to form products is zero order in a , one-half order in b , and second order in c.
A reaction with zero-order kinetics in reactant "a," one-half order in reactant "b," and second-order kinetics in reactant "c" means that the rate of the reaction depends differently on the concentration of each reactant.
According to zero-order kinetics, the rate of the reaction is independent of the reactant's concentration, therefore doubling its concentration won't increase the rate of the reaction by the same amount.
According to one-half order kinetics, the rate of the reaction is proportional to the square root of the reactant concentration, so doubling the concentration of "b" will cause a factor of the square root of 2 increase in the rate of the reaction.
According to second-order kinetics, the rate of the reaction is proportional to the reactant concentration squared, so doubling the concentration of "c" will cause the reaction rate to increase by a factor of four.
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Question: A reaction in which a , b , and c react to form products is zero order in a , one-half order in b , and second order in c. by what factor does the reaction rate change if [b] is doubled (and the other reactant concentrations are held constant)?
Polymer A
All monomers have rings.
It contains no N or P.
The bonds between monomers involve The bonds between monomers involve
sugar molecules.
sugar molecules.
O Lipids and proteins
Polymer B
All monomers have rings.
What two classes of biomolecules are being compared?
Nucleic acids and proteins
It contains both N and P
Lipids and nucleic acids
O carbohydrates and nucleic acids
The two classes of biomolecules being compared are carbohydrates and nucleic acids.
The correct option is D.
What are nucleic acids and carbohydrates?Macromolecules that are made up of oxygen, carbon, and hydrogen are known as carbohydrates. They consist of monosaccharides and are present in meals like bread.
Carbohydrates have ring structures but do not contain nitrogen and phosphorus.
Macromolecules called nucleic acids are the information molecules of every organism's genetic material is made up of macromolecules called nucleic acids. Nucleotide monomers make up their structure.
Nucleic acids have ring structures that contain nitrogen and phosphorus.
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Which of the following materials are NOT used in the disk diffusion method? A. Petri dish filled with nutrient -rich agar B. Filter paper discs impregnated with antibiotics C. Ruler to measure zones of inhibition D. Unknown liquid bacterial culture
All of the above mentioned are required in the disk diffusion method. So, the correct option is E.
What is Disk Diffusion method?Disk diffusion test is defined as a culture-based microbiology assay that is used in clinical and drug discovery laboratories. The assay is used in clinical laboratories to determine the susceptibility of bacteria isolated from patient infections to clinically approved antibiotics.
This method requires a Petri dish filled with nutrient-enriched agar, filter paper discs impregnated with antibiotics, rulers to measure areas of blockage, and an unknown liquid bacterial culture. The agar well diffusion method is commonly used to evaluate the antimicrobial activity of plant or microbial extracts.
Thus, all of the above mentioned are required in the disk diffusion method. So, the correct option is E.
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Your question is incomplete, most probably the complete question is :
Which of the following materials are NOT used in the disk diffusion method?
A. Petri dish filled with nutrient -rich agar
B. Filter paper discs impregnated with antibiotics
C. Ruler to measure zones of inhibition
D. Unknown liquid bacterial culture
E. None of the above
Salicylic acid is one of the hormones proposed to be important for systemic acquired resistance (SAR). Which of the following observations would suggest that salicylic acid is an important signaling molecule for SAR in response to infection by tobacco mosaic virus (TMV)?Salicylic acid is one of the hormones proposed to be important for systemic acquired resistance (SAR). Which of the following observations would suggest that salicylic acid is an important signaling molecule for SAR in response to infection by tobacco mosaic virus (TMV)?When a leaf of a plant is infected by TMV, salicylic acid is only present in infected leaves.Salicylic acid is present in leaves before a TMV infection, but not after.A plant is more likely to be infected by TMV if salicylic acid is present.Levels of salicylic acid increase in the vascular tissue fluid of a plant when a single leaf is infected with TMV.
Increased levels of salicylic acid in vascular tissue fluid suggest it's important for systemic signaling and defense against TMV.
The observation that levels of salicylic acid increase in the vascular tissue fluid of a plant when a single leaf is infected with TMV suggests that salicylic acid is important for systemic signaling in response to TMV infection, activating the plant's defense response.
Systemic acquired resistance (SAR) is a defense mechanism in plants that provides protection against future pathogen attacks. Salicylic acid is proposed to be an important hormone for the activation of SAR in response to infection by tobacco mosaic virus (TMV). The observation that levels of salicylic acid increase in the vascular tissue fluid of a plant when a single leaf is infected with TMV suggests that salicylic acid is involved in the systemic signaling process that activates the plant's defense response. This allows the plant to mobilize a rapid and effective defense response against future pathogen attacks.
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define what is holoendemic
Answer:
Explanation:
holoendemic [ holoendemic] endemic at a high level in a population, affecting most of the children and so affecting the adults in the population less often; see also hyperendemic.Holoendemic
Explanation: A holoendemic disease is one for which a high prevalent level of infection begins early in life and affects most of the child population. HOPE THIS HELPS!
A student is investigating genetics by performing crosses between fruit flies. In their first cross, they select a male with the genotype NEe and cross it with a NNee female.
• N- Normal Wings
• n - Vestigial Wings
• E - Red Eyes
• e - Sepia Eyes
What percentage (or fraction) of the offspring would you expect to have vestigial wings and sepia eyes? Be sure to show your work for full credit.
The percentage (or fraction) of the offspring that we would expect to have vestigial wings and sepia eyes is 0% and 25%.
What are vestigial wings?Vestigial wings are an example of vestigial organs which are present in certain insects such as fruit flies, but does not help them to fly.
To answer the given question, we can use the principles of Mendelian genetics and the Punnett square.
The genotypes of the parents:
Male (NnEe): Nn (normal wings) and Ee (red eyes)
Female (NNee): NN (normal wings) and ee (sepia eyes)
The probability of any offspring having the nn genotype (i.e., vestigial wings) is,
1/2 × 0 = 0.
The probability of any offspring having the ee genotype (i.e., sepia eyes) is,
1/2 × 1/2 = 1/4.
In summary, we would expect 0% (or none) of the offspring to have vestigial wings and sepia eyes, but we would expect 25% (or 1/4) of the offspring to have normal wings and sepia eyes.
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Genome maps provide the dna sequences of chromosomes. Some scientists have compared the genome maps of a hedgehog and a sloth. What do these genome maps allow the scientists to determine?.
Evolutionary relationships: Genome mapping can aid researchers in understanding the evolutionary relationships between various species.
What can researchers learn from genomic maps?Genome mapping is a method for locating genes on a chromosome and calculating their distances from one another. Linkage mapping, another name for genetic mapping, can provide solid proof that a condition passed from parent to kid is connected to one or more genes.
Why are other organisms' genomes being sequenced by scientists?Understanding genomes and their function in the development of organisms is improved through genome sequencing. An organism's DNA is used to identify the order of its base pairs, which are coded by the letters A, C, T, and G, when scientists sequence a genome.
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justify the statement "sex of the children will be determined by what they inherit from their father".
offspring produced by ___
reproduction inherit some of the genetic information from each ____
Answer: simple parent
Explanation:
A scientist has found a protein that is involved in an important chemical
reaction. She sets up two tests: one with the protein and one without the protein.
What should she measure to determine whether the protein is an
enzyme?
O The amount of products bound to the active site
The amount of protein consumed
O The rate of the chemical reaction
O The temperature change of the reaction
Answer:
The rate of the chemical reaction
Explanation:
The rate of the chemical reaction is the key measurement that the scientist should make to determine whether the protein is an enzyme. This is because enzymes are biological catalysts that increase the rate of chemical reactions without being consumed themselves in the process. By comparing the rate of the chemical reaction in the presence and absence of the protein, the scientist can determine whether the protein is acting as an enzyme and thus playing a role in the reaction.
Lyle knows that the distance from his house to his school is three-fourths of a mile. On the map he has drawn of his neighborhood, they are one-fifth of an inch apart. What scale could lyle include on the map? select three options. One-fifth inch = three-fourths mile three-fourths inch = one-fifth mile four-fifths inch = 3 miles 3 inches = 12 miles 4 inches = 15 miles.
Lyle's scale might allow for the inclusion of the appropriate alternatives (A), (C), and (E). (A) A half-inch equals a mile (C) 3 miles = 4.5 inches (E) 15 miles in 4 inches.
Distance is calculated as the sum of a person's movement and time. Let D be the actual distance in miles between any two points, and let d be the distance shown on the map between any two points, measured in inches. The distance on the map to the actual distance is equivalent to 1/5 of an inch because the scale on the map is 1/5 inch = 3/4 mile; d/D = (1/5)/(3/4). 1/5 inch equals 3/4 mile. 3 miles = 4.5 inches 15 miles in 4 inches.
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Which experience led an engineer to invent Velcro?
O A. Planting seeds in his flower garden
о B. Finding burrs stuck to his dog's fur
O C. Watching astronauts in space on TV
O D. Identifying wolves by individual howls
The experience that led an engineer to invent Velcro Finding burrs stuck to his dog's fur
What is Velcro?The brand name of a fastening used in clothes is Velcro. Less frequently used names for this widely used fastener are hook-and-loop fasteners. These closures can be seen on pockets, sneakers, and other clothing items. Touch and close flaps with Hook-and-Loop fasteners are a hallmark of our workplace trousers.
Woven tapes are commonly made from one or more nylon, polyester, and Nomex (a flame-resistant meta-aramid material developed in the early 1960s by DuPont). Each pair has a hook tape and a loop tape with loops made of the same fiber as the woven tape.
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