A student observers melting crayons. Which of the following describes what they saw? A. A chemical change. B. A physical change. C. A physical property. D. A chemical property

Answers

Answer 1

Answer: A physical change

Explanation: since the melted they are still Crayons. You can freeze it and it would still be a crayon. So it was only a physical change


Related Questions

Place the characteristics of viral life cycles into the appropriate life cycle category.
Lytic Cycle
Lysogenic Cycle
- Contains a prophage
- Occurs in temperate viruses
- Replicated by cell division
- Has an assembly step
- are all virulent
- replicated by viral assembly
- viral genome active
- Viral genome repressed

Answers

Lytic Cycle: Replicated by cell division, Has an assembly step, Are all virulent, Replicated by viral assembly and Viral genome active.

Lysogenic Cycle: Contains a prophage, Occurs in temperate viruses and Viral genome repressed.

In the lytic cycle, the viral genome becomes active and directs the host cell's machinery to produce new viral components. The newly formed viral components are then assembled, leading to the lysis of the host cell and the release of new viral particles. This cycle is characteristic of virulent viruses, which immediately cause cell lysis.

In contrast, the lysogenic cycle involves the integration of the viral genome into the host cell's genome, forming a prophage. The viral genome remains repressed and is replicated along with the host genome during cell division. Temperate viruses exhibit the lysogenic cycle, where they can remain in a dormant state within the host cell for an extended period before transitioning into the lytic cycle.

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which of the following terms refers to how daughter DNA molecules contain half of the parent DNA molecule

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Half of the parent DNA molecule is conserved in each of the two daughter DNA molecules

What five characteristics of a rock would make it a mineral?

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   Hardness.

   Luster.

   Color.

   Streak.

   Specific Gravity.

Five characteristics would be

1. Color

2. Hardness

3. Luster

4. Crystal form

5. Denisty

Which type of enzyme, produced in the walls of the small intestine, removes single amino acids from the end of small polypeptides?

Answers

Exopeptidase enzyme, produced in the walls of the small intestine, removes single amino acids from the end of small polypeptides.

Of those five components, pepsin is the predominant enzyme worried with protein digestion. It breaks down proteins into smaller peptides and amino acids that may be without trouble absorbed inside the small intestine. Proteins are digested via the pancreatic enzymes trypsin chymotrypsin, and carboxypeptidase.

The enzymes that act within the small intestine are amylase protease and lipase. Amylase acts on starch and breaks it down into small carbohydrate molecules. Protease acts on proteins and breaks them down into amino acids. Lipase breaks down dietary fats into smaller molecules called fatty acids and glycerol. Amylase digests carbohydrates, lipase digests fat, and trypsin digests proteins. The pancreas also secretes big portions of sodium bicarbonate.

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true or false: if a sexually reproducing, diploid organism has four chromosomes, then the only options for the gamete genotypes produced for that organism are represented by the gametes shown below. note - assume crossing over does not occur.

Answers

False Clarification: Assume that the gamete genotypes represented by the chromosomes are the only options available.

What are some examples of organisms?

A living creature that has a defined system, is capable of responding to stimuli, can reproduce, develop, adapt, and preserve homeostasis is referred to as an organism. Therefore, every mammal, herb, fungi, unicellular organism, bacterium, or archaeon found on Earth would be considered an organism.

What does a human organism look like?

Eleven organ systems make up the human body. The integumentary system, skeleton, muscular, nervous, endocrine, cardiovascular, lymphatic, respiratory, digestive, urinary, and reproductive systems are among them.

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Which of the body’s systems provides movements of the skeleton, organs, and maintains body temperature and posture?

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Answer:

Skeletal muscles also: Maintain posture and body position; Support soft tissues; Guard entrances and exits to the digestive and urinary tracts; and, Maintain body temperature

What is immigration?
A. When animals are bom in an ecosystem
B. When animals die in an ecosystem
C. When animals move into an ecosystem
D. When animals leave an ecosystem

Answers

answer would he C. immigration is when animals move from one habitat to another for survival

how do the four tissues support the function of the heart

Answers

The heart is made up of four different types of tissues. The four tissues that support the function of the heart are as follows:

1. Epithelial Tissue

2. Muscle Tissue

3. Nervous Tissue

4. Connective Tissue

The Epithelial Tissue forms the lining of the blood vessels and the inner surface of the heart valves. This lining helps to reduce friction and increase blood flow.

The Muscle Tissue is responsible for contracting and relaxing the heart muscle, which pumps blood through the body. The Nervous Tissue coordinates the beating of the heart and helps to regulate its function. The Connective Tissue provides structural support and helps to hold the heart in place.

The tissues in the heart work together to ensure that blood is pumped efficiently through the body. The epithelial tissue helps to keep the blood flowing smoothly through the heart, while the muscle tissue contracts and relaxes to pump the blood.

The nervous tissue ensures that the heart beats at the right rate and rhythm, while the connective tissue provides the structural support necessary to keep the heart in place. All four tissues work together to support the function of the heart.

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1) Name a structural protein found in plants.

Answers

Answer:

keratin, collagen, and elastin are some

Explanation:

a red-eyed female fly was crossed with a white-eyed male fly. all the f1 offspring have red eyes. two of these red-eyed f1 generation flies were crossed to each other. the f2 generation included both red- and white-eyed flies. remarkably, all the white-eyed flies were male. what was the explanation for this result?

Answers

The answer for why all of the white-eyed flies are males is that a gene exists on the X chromosome.

What defines a generation?

A generation is the collective term for all individuals who were born and are still alive at around the same period. The average time frame, commonly regarded to be between twenty and thirty decades, in which children are born, grow up, becoming adults, and start having children is another way to put it.

Why is it called the Silent Generation?

The Silent Generation supported "working within the system," in contrast to the preceding generation, who had pushed for "changing the system." They achieved this by putting in long hours of work and gaining the reputation of being "quiet."

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la maestra Leticia dice que para vivir en una democracia es indispensable saber lógica, por que requerimos saber argumentar para involucrarnos en los asuntos de la vida

¡ah! pues suena interesante su postura

yo no creo que sea cierto eso lo dice por que ella es maestra de logica es obvio que tiene que defender su trabajo

que falacia es

Answers

Translation??? Ingles.

The __________ system works in tandem with other body systems and maintains their health by delivering nutrients and removing wastes. It is central to the function of all other body systems.cardiorespiratory

Answers

The cardiopulmonary system works in concert with other body systems to maintain health by providing nutrients and removing waste products. It is central to the functioning of all other body systems.

What is cardiorespiratoty system and its significance?The cardiopulmonary system consists of the heart and blood vessels, which work in tandem with the lungs and respiratory system called the airways. These body systems carry oxygen to the body's muscles and organs and remove waste products, including carbon dioxide. During exercise, muscles require more oxygen to contract and produce more carbon dioxide as a waste product.Is the cardiovascular system the same as the cardiopulmonary system?

It works in conjunction with the cardiovascular system (heart and blood vessels) and the respiratory system (lungs). Collectively these are called one system, the cardiopulmonary system.

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what is the difference between phototropism , gravitropism , hydrotropism , and thigmotropism​

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Answer:

https://brainly.in/question/6314438

Geo- means earth, tropism is movement. Geotropism is what makes roots grow toward gravity and shoots grow away from gravity, so that plants are oriented correctly in the ground.

The response of plants or animals towards light is called phototropism.

When the response is towards the light, it is called positive phototropism.

And when the response is away from the source of light, it is called negative phototropism.

For example, we see plants bending towards sunlight. It is actually their response towards light and is called positive phototropism.

Thigmotropism is the directional response of a plant organ to touch or physical contact with a solid object. This directional response is generally caused by the induction of some pattern of differential growth. This phenomenon is clearly illustrated by the climbing tendrils of some plants, such as the sweet pea

Match the type of microevolution with the example described below. Letters may be used once, more than once or not at all.A. genetic driftB. migrationC. mutationD. natural selection

Match the type of microevolution with the example described below. Letters may be used once, more than

Answers

• Peppered mohs vary from light to dark and the frequence of light and dark morths varies depending on the color of the trees in their environment.

,

• D. Natural selection. ,The color frequency is related to the trees because whe the moths are a different color from th trees, they are more easuily eaten, so o,nly the mmore adapted moths, ,survive, and have ,offspring,.

• A group of birds moves to a new patch of forest and begins to breed with the existing poplation that currently lives in that forest.

,

• B. Migration. , The group that arrives at the new patch of forest has, moved or migrated, and brings ,new genetic information, to the population living there previously.

• A small group of whte-tailed deer croosses the frozen water of Lake Michigan and establishes a new population on a remote island. The alleles present in the gene pol of the pfounder population differ from the populationpresent in the rst of Michigan. A

,

• A. Genetic drift ,(founder effect)., When a small grup o indviduals splts from the main population and sestablishes anew new one, this new popultion hasjust a s ,smallample of the alleles f,rom ththe original population, and just by, random chance(genetic drift), differetnt ,alleles will be fixated, in the new population

• Colorful lizards living on brown leaves are most often eaten by predators.

,

• D. Natural selection. ,As with the moths, the lizards with a more different color than their environment are moe prone to be eaten, so they don't reproduce and those colors don't remain in the poulation.

!!!!NEED HELP ASAP ILL GIVE BRAINLIEST AND 25 POINTS!!!!! How do proteins help transport of materials through the membrane?

Answers

Answer:

Channel proteins can aid in the facilitated diffusion of substances by forming a hydrophilic passage through the plasma membrane through which polar and charged substances can pass.

Explanation:

Answer: By forming a continuous protein pathway across the membrane, these proteins enable specific hydrophilic solutes to cross the membrane without coming into direct contact with the hydrophobic interior of the lipid bilayer. Carrier proteins and channel proteins are the two major classes of membrane transport proteins.

Determine whether each statement refers to species diversity or genetic diversity.
Every organism in an ecosystem relies on other species for survival:__________
Reduced options for mates can lead to inbreeding:
Decreased diversity can lead to increased susceptibility to disease:___________
The loss of a producer could result in the loss of consumers:___________
When a population becomes small, diversity is lost:

Answers

Answer:

1. species diversity

2. genetic

3. genetic

4. species

5. genetic

Explanation:

1 and 4th shows species diversity whereas 2, 3, 5 refers to genetic diversity.

What is the difference between genetic and species diversity?

The primary difference between genetic diversity and species diversity is that genetic diversity refers to differences in DNA that may be found across individuals of the same species

Whereas species diversity refers to the number of different species that can be found in a certain region. The term "ecological diversity" refers to the range of ecosystems that may be found in a certain region.

A given species' capacity to adapt and spread across a variety of environments is facilitated by genetic diversity. Diversity of species fosters biotic interactions and community stability.

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what type of lipids that contain a glycerol molecule and three fatty acid tails

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The type of lipids that contain a glycerol molecule and three fatty acid tails are known as triglycerides.

A triglyceride is a type of lipid that is most commonly found in adipose tissue, which is a type of connective tissue that stores fat. This is one of the most important lipids in the human body because it is used as a source of energy when other forms of energy are not available.Triglycerides are composed of three fatty acid tails and a glycerol molecule.

The fatty acid tails are hydrophobic, meaning that they do not dissolve in water, while the glycerol molecule is hydrophilic, meaning that it does dissolve in water. This is why triglycerides are classified as lipids, as they are composed of both hydrophilic and hydrophobic components.Overall, triglycerides are an essential component of the human body because they play a role in energy storage and metabolism. They are also important for the structure of cell membranes and the regulation of certain hormones.

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How could you use the steps for evaluating a player for a concussion in evaluating whether someone is concussed? Please help!

Answers

Migraine or a headache, dizziness, nausea, fatigue, cognitive difficulty, Variations in mood, sleeping issues, diagnosis of concussions are the most typical signs of concussion.

How could you use the steps for evaluating a player for a concussion in evaluating whether someone is concussed?

A thorough examination and cognitive test must be conducted by a physician skilled in identifying and treating concussions. This will enable them to assess the level and impact of the concussion.

Your doctor will examine you for the following things which are hearing, Vision and reflexes and equilibrium and coordination your memory and the last one is your span of attention.

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if a persons blood with unknown blood type is mixed with antibodies for a antigen and no agglutination has occurred. The blood group might be:
a-A    b-B   c-O   d-both(b&c)​

Answers

I'm not sure, but I think it's a-A

Alan looks at a flower. he can see the size, shape, and colors of the flower. why can alan see the flower? please help quick​

Alan looks at a flower. he can see the size, shape, and colors of the flower. why can alan see the flower?

Answers

Answer: A

Explanation:

Answer:

a

Explanation:

Explain how sleep, diet and weight affects a dog’s weight.

Answers

Answer:

Because when a dog is sleeping it helps the brain function right. diet effects a dog to lose weight.

Explanation:

your welcome :)

Good sleep is needed for a healthy body. Without a good nights rest, this will affect the diet and make the dog eat more or less therefore fluctuating the dogs weight.

How would the pH of a strong base (pH 14) change with the addition of a buffered acid (pH 5)? A. The base's pH would be lower. B. The base's pH would be higher. C. The base's pH would become neutral. D. The base's pH would remain the same.

Answers

When buffers acid of pH 5 is added to a strong base (pH 14), its pH will become lower, hence option a is correct.

How does pH change in solution?

The amount of hydrogen ions (acidity) rises and the pH decreases when acid is dissolved in a solution.

When an acid and a base are together, they react to counteract each other's effects and create a salt. Water is created when the OH⁻ anion of the base and the H⁺ cation of the acid mix.

Therefore acid lowers the pH of the base when added to the solution, hence option a is correct.

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How long until Chernobyl will be safe again?

Answers

It will never since how their high radiation but it would take about a 100 years by how it’s not life able anymore and giving it time for radiation to break down which is about 20,000 years.

What part of the genome is used for a genetic fingerprint?
A. Chromosomes
B. Introns
C. Exons
D. Minisatellites

Answers

Answer:

A.chromosomes

Explanation:

hope it's help

If the population of hawks in this area increases, their prey populations might decrease. Later, with fewer prey, the hawk population might decrease. The prey populations might then increase. This is an example of

Answers

Answer:

This question lacks options, the options are:

1. an ecosystem completely out of balance

2. how ecosystems maintain stability over time

3. interaction between biotic and abiotic factors within an ecosystem

4. ecological succession

The answer is 2

Explanation:

An ecosystem comprises of biotic organisms, abiotic substances etc. that interact with one another. The biotic components of an ecosystem are known to feed on one another in order to obtain energy. However, stability of an ecosystem must be maintained between predators and prey or else there will be extinction of many species of organisms.

One way balance in an ecosystem is maintained over time is by the increase and decrease in population of predators and preys in an ecosystem. For example, If the population of hawks (predator) in an area increases, their prey populations might decrease because there will be less predation.

Also, at a later time, when there is a fewer population of prey, the hawk population might decrease because there is less food to eat. The prey populations might then increase.

The image below shows a microscopic image of plant cells going through different stages of mitosis.
Which stage identification is correctly justified?

Group of answer choices

The missing nuclear envelope indicates that C is metaphase.

The separation of sister chromatids indicates that D is telophase.

The condensed chromatin indicates that A is prophase.

The presence of a nucleus indicates that B is prophase.

Answers

Answer:

The condensed chromatin indicates that A is prophase

Explanation:

what is the importance of ATP and NADPH?​

Answers

Answer:

The energy that these molecules carry is stored in a bond that holds a single atom to the molecule. For ATP, it is a phosphate atom, and for NADPH, it is a hydrogen atom.

These electrons are used to produce NADPH as well as ATP in a series of reactions called the light reactions because they require light. NADPH and ATP formed by the action of light then reduce carbon dioxide and convert it into 3-phosphoglycerate by a series of reactions called the Calvin cycle or the dark reactions.

3 ways in which a country address or improve the problem of illegal immigration​

Answers

Answer: Illegal immigration can be defined as the migration of the people into another country by violating the immigration laws of the country being visited.

Explanation:

The three ways in which the country can address or improve the problem of illegal immigration are as follows:

1. The country can impose strict immigration laws on people who are native of other countries.

2. The country can prohibit schooling and education of children belonging to unauthorized citizenship.

3. The country can also prohibit the food availability and driving licences of the people belonging to the other country with unauthorized citizenship.

Answer:

No Idea

Explanation: I don't have an answer but I just want to say, Thanks Surnia. :) This really helped me. I was about to give up.

Two possible negative implications that free higher education may have for prospective students

Answers

There are two possible negative implications of free higher education that prospective students may face. Firstly, providing free higher education may result in a high number of applicants seeking admission to colleges and universities. Secondly, the quality of education may be affected as a result of the burden on the government.

It is suggested that when higher education is provided for free, it is probable that the number of applicants seeking admission to colleges and universities will increase to a significant extent. The increased number of applications may cause universities to compromise admission criteria. Hence, it could lead to many students who may not be qualified for higher education to be accepted, which can lead to the quality of education to decline significantly. Moreover, the decrease in the quality of education can result in an adverse impact on students as they may not be able to acquire the necessary knowledge and skills for future jobs and careers.

Therefore, providing free higher education may have negative implications such as the decline of the quality of education and increased competition to enter universities, which can cause a decrease in the quality of education and adversely affect the students.

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after a loud noise, information travels from the medulla to the ____, and then to the neck muscles.

Answers

Superior colliculus.

After a loud noise, information travels from the medulla to the superior colliculus, and then to the neck muscles.

The medulla is a region of the brainstem that controls many vital autonomic functions, such as heart rate and breathing. It is also responsible for relaying auditory information to other parts of the brain for further processing.

The superior colliculus is a structure located in the midbrain that is involved in visual and auditory processing, as well as motor control. In response to a loud noise, the superior colliculus receives information from the medulla and sends signals to the neck muscles to prepare for a reflexive head turn or startle response.

This reflexive response is crucial for survival in potentially dangerous situations, as it allows the body to quickly respond to unexpected stimuli and avoid harm. The neural pathway from the medulla to the superior colliculus to the neck muscles is an example of a rapid and automatic reflex arc that occurs without conscious thought or effort.

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Need help ASAP with answering this question I need help on this please! This is Geometry :) We get our concept of the "hero" from ancient mythology, but we have also seen that few ancient heroes would actually fulfill our expectations of what it means to be a hero. Of the following, which would best fit into our modern view of the "hero"? k wood in had the following balances deferred tax asset 80,000 dr valuation allowance unadjusted 10,000 cr management reveiews all available positive and negative evidence to estimate that it was more likely than not Theeffectively reoriented U.S. foreign policy, away from its usualstance of withdrawal from regional conflicts not directly involving the UnitedStates, to one of possible intervention in far away conflicts.?Which words correctly complete this excerpt?A Second Red ScareB Truman DoctrineondautrahmboannsC Korean WarD arms race On a bicycle, DaNeeka rides for 6 hours and is 68 miles from her house. After riding for 12 hours, she is 134 miles away. what is her rate ? Summet uses 0.4 gallon of gasoline each hour Primary Economic endeavors in The middle colonies The main message conveyed during the cooking demo is that for health promotion and disease prevention it is recommended to: 1. How did Paul Revere warn the people of Charlestown that the British were coming?He hung kites in the steeple of the North Church.None of these are correctHe ran through the church yelling, "The British are coming".He hung lanterns in the steeple of the North Church. a. use all communication methods available that are suitable for the team and follow up in writing when communicating verbally. remember that cultural and individual diversity may help project teams solving unforeseen problems during the course of the project. b. when you are about to form a team for your project, keep in mind that some cultures are developed, others are more primitive. some have values, some not. you should consequently avoid choosing members from countries with cultures that are not similar to your own. c. cultural dilemmas can prevent any project from being successful. they should therefore be smoothed or suppressed so as to make sure that they cannot disrupt project work. your effort should concentrate on communication that can help reach that goal. d. as norms regarding communication habits differ significantly across various cultures, communicating between people from different countries should only be done using written or verbal language. the nonverbal dimension simply bears too many risks. Discuss the fundamental epistemological debates concerning with source of human knowledge Why might an environmental interest group want to conduct a public opinion poll? Delta Motorworks markets its cars based on the age, gender, and income of its customers. Which of the following types of market segmentation is evident here? answer choicesGeographic segmentationBenefit segmentationOccasion segmentationDemographic segmentation Please help me with my homework What two parts of the American economy did the lesson mention as being most dramatically impacted by the Great Depression 13)a company purchased a 3-acre tract of land for a building site for $350,000. the company demolished the old building at a cost of $12,000, but was able to sell scrap from the building for $1,500. the cost of title transfer was $900 and attorney fees for reviewing the contract was $500. property taxes paid were $3,000, of which $250 covered the period after the purchase date. the capitalized cost of the land is: the nurse is providing care for a client with a nasogastric tube. which observation is most appropriate in determining that the tube is correctly placed? How could feedback from peers help in the review process? Which of the following feedback from a peer would not help in the review process?A.) I noticed you are missing commas when introducing a direct quotation from your sources. It would benefit you to make sure those are added.B.) Your paper sounds so academic and formal. Why not throw in some slang and personal pronouns to make it sound friendlier?C.) I notice that youve included memes. Why not select multimedia that more directly relates to your topic? D.)While I appreciate the creativity in your slide deck, it may be more beneficial to make the look and feel more consistent throughout. The potential equals 7.92 V at the midpoint between two point charges that are 1.06 m apart. One of the charges is 1.07 10-9 C. Find the value of the other charge.