how could the adaption of valves in leg vains allow a human to better survive in its environment.

Answers

Answer 1
The answer is that healthy legs have veins with smooth, elastic walls that are perfectly designed to adapt to the changes in pressure within a vein. Veins have valves that keep blood moving in one direction: back toward the heart. As the leg muscles are activated, the venous valves open to allow one-way flow in the direction of the heart.

Related Questions

Cameron's parents are divorcing, and the situation is really stressing him out. this is an example of a __________ problem.

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This is an example of "personal problem".

Everybody has issues and problems. Sometimes you have a problem as a student, you may experience issues with your course of study, or now and again normal mental issues, for example, nervousness or gloom might influence your life. 
There are likewise numerous issues that are not specifically to do with study or mental health, however may in any case great affect your life -, for example, mourning, relationship troubles, issues with liquor or medications, harassing or your parent's relationship like in the given case his parent's are divorcing.

Brian, a student who wants to get back into shape, decides to ride a bike to campus every day. a few days after getting into his new routine, he decides to cycle from his afternoon lab at uc-santa barbara all the way to the santa barbara beach. once his adrenaline is piqued by the exercise, he notices a passerby smiling at him benignly. he is most likely to react with a feeling of: 1. arousal. 2. ambivalence. 3. jealousy. 4. exhaustion.

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Final answer:

Brian is most likely to experience a feeling of arousal due to the increased endorphins from his physical activity, in line with the optimal arousal theory.

Explanation:

When Brian, after getting into a new exercise routine, notices a passerby smiling at him benignly while cycling to Santa Barbara beach, he is most likely to react with a feeling of arousal. Physical activity, like cycling, tends to increase levels of endorphins, which are associated with feelings of pleasure and decreased pain, contributing to a phenomenon known as "runner's high." The optimal level of arousal theory suggests that engaging in such activities helps individuals maintain an intermediate level of arousal, avoiding both boredom and excessive stress.

Dr. hogberg has diagnosed a child with attention deficit hyperactivity disorder. he choses to give a prescription for aderall. given this information, it is most likely that dr. hogberg is a _________________.

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The correct answer is psychiatrist.

A psychiatrist is a medical doctor who has expertise in psychiatry. It is the branch of medicine in relation to the counteractive action, study, diagnosis, and treatment of mental issues. Psychiatrists are medical physicians, not at all like psychologists. They must assess individuals to decide if their indications are the aftereffect of a physical ailment, a mix of physical and mental sicknesses, or entirely mental.

What are the basic purposes of policing in democratic societies how are they consistent?

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The essential motivations behind policing are to uphold and bolster laws, control criminal activities, arrest guilty parties, forestall crime, help guarantee internal peace and serenity at domestic level, and give the society required authorization related administrations. These reasons overlap in a various ways. For instance, cops investigate bad people and arrest a criminal, which implements and backings the laws of a general public.

They are consistent as you need to draw a line between legality and illegality and policing makes it a priority that people live by these lines and those who don’t need to be put away.

According to the text the most widely studied psychosocial need is the need for

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According to the text the most widely studied psycho-social need is the need for "achievement".

Need for achievement alludes to a person's want for noteworthy achievement, mastering of aptitudes, control, or exclusive expectations. The term was first utilized by Henry Murray and related with a scope of activities. These include: "extreme, drawn out and rehashed endeavors to achieve something troublesome. To work with singleness of reason towards a high and far off objective. To have the assurance to win". The idea of Need for achievement was hence promoted by the psychologist David McClelland.

Ralph was involved in an automobile accident in which the driver of the other car sustained extensive injuries and property damage. since ralph was under the influence of alcohol at the time of the accident it was established that he did not conform ________ and therefore negligence was established as a cause of action.

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The correct answer is "To the reasonable person standard".

Reasonableness Standard refers to an examination which asks whether the choices made were authentic and intended to cure a specific issue in light of the current situation at the time. Courts utilizing this standard take a gander at both a definitive choice, and the procedure by which a gathering approached settling on that choice.

"a hypocritical leader extols the virtues of integrity and ethical conduct, but then engages in unethical behavior and may encourage others to do so as well"

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The answer is that "the given statement is true".

Hypocritical leadership, is when administration says a certain something, yet does another. It is when top administration admonishes the association to carry on in one way, however they keep on behaving in another.Trust is vital for any association including the leader ones. Shockingly, this trust is lost in numerous associations, according to my opinion this is hypocritical leadership.

Megan has to give a class presentation in one week but hasn't begun preparing for it yet because she's convinced that she will not be able to do a good job. how could megan overcome her self-doubts and increase her sense of self-efficacy in this situation?

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The answer is "Megan should observe other students doing class presentations, and ask the best students for advice".

Self-efficacy is characterized as an individual judgment of "how well one can execute strategies required to manage planned situations". Expectations of Self-efficacy decide if an individual will have the capacity to show adapting conduct and to what extent exertion will be supported despite obstacles. Individuals who have high Self-efficacy will apply adequate exertion that, if first rate, prompts effective results, though those with low Self-efficacy are probably going to stop exertion early and fail.

Gender may be considered an achieved status as well as an ascribed status because

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Ascribed status are given in birth while achieved status are those that a person strives for. Gender is predominantly a master ascribed status that is given in birth without any effort from the person that is given. Nonetheless, gender can become achieved status in case a person after reaching a certain age decides to change their gender.

The main impact of paternal consumption of alcohol (i.e., father's drinking) on a child involves the fact that fathers who drink tend to have

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Parents that drink alcohol can have serious abusive and negligent tendencies towards their children, which can cause the child to become extremely fearful of and sadly might even replicate/justify the actions of that parent.
When parents drink and/or do drugs, they'll most likely become like their parents because a child looks up to his/her parent. Because this is their role model, they look up to them. Unfortunately, this is what kids usually do if they have this happen in their daily lives. :(

Which of the following headlines BEST represents a solely humanitarian effort by the United States?
A.
Six American Platoons Return from Iraq
B.
American Relief Money Sent to Victims of Haitian Earthquake
C.
NATO Treaty Angers South American Leaders
D.
Trade Sanctions Imposed on Iran

Answers

b) American Relief Money Sent to Victims of Haitian Earthquake. 

Hope this helped!
Hello!

Answer: American Relief Money Sent to Victims of Haitian Earthquake

Have an awesome day!

Many officers consider __________ to be their unsung heroes.

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Many officers consider dispatch to be their unsung heroes.

This philosophy of governmental non-interference in the economy is called

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Laissez-faire economics 

Many nineteenth century businessmen believed that the American economy was "self-adjusting." This idea traced its roots to Adam Smith and his teachings concerning capitalism.

This philosophy of governmental non-interference in the economy is called

C. Laissez-faire economics.

N 1931, anthropologist audrey richards documented the chisungu ritual, performed in zambia. what is this women-only ritual that centers on menstruation and marriage an example of in anthropology?

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An example of "rites of passage".

Rites of passage implies those rites and rituals that stamp imperative transitional periods in a man's life, for example, birth, pubescence, marriage, having kids, and demise. Rites of passage for the most part include custom exercises and lessons intended to strip people of their unique parts and set them up for new parts.

which of the following statements about constellations is false

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Most constellations will be unrecognizable hundreds of years from now.
mark me as brainliest please

Most constellations will be unrecognizable hundreds of years from now is the statements about constellations is false. Thus, option (a) is correct.

What is constellations?

The term constellations refer to the group of the stars. The constellations were the mythological figure. The definite shape of the stars. It was the imagenery shape in the night sky. It was the joint the stars are the connected to the created the shape is the animals, mythological characters, people, and the object.

The constellations were the based on the Southern and the Northern hemispheres. According to the fact, the 88 official constellations. Both the winter and the summer are the season is the visible in the constellations. But, not the unrecognizable hundreds of years is constellations is the statement was the false.

As a result, the significance of the constellations are the aforementioned. Therefore, option (a) is correct.

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Your question is incomplete, but most probably the full question was.

which of the following statements about constellations is false?

A) Most constellations will be unrecognizable hundreds of years from now.B) Some constellations can be seen from both the Northern and Southern hemispheresC) There are only 88 official constellations.D) It is possible to see all the constellations from Earth's equator.E) Some constellations can be seen in both the winter and summer.

When many participants in a study have strong opinions,    could occur?

Answers

I believe the answer is: Participation bias
Participation bias happened when most subjects posses certain traits that would most likely influence the outcome of the data.
For example, when conducting a research on whether citizens favor increasing the amount of income taxes, the data would most likely shows strong favorability if most of the subjects are affiliated with democratic party.

how did the network of European alliances cause world war 1 to develop

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When countries got called into action their partners came to their aid.. 






~ruru~

In their cross-sectional study, researchers hypothesized that stress was a risk factor for depression among college students. the researchers found a correlation between stress and depression, consistent with the hypothesis. which is a possible threat to the internal validity of the study? temporal ambiguity selection maturation mortality

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risk for depression among college students. I would say temporal but what are the options

Maria claims never to have an appetite. she enjoys preparing food for others, but she never partakes in her creations, claiming she has already eaten. she is quite thin but tells her friends she needs to lose "just a few more pounds." most days she is at the gym working out for two to three hours. she would best be described as suffering from

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She is most likely suffering from anerexia

Help bros and shawtys The entrepreneurs who developed Coca-Cola, Delta Airlines, and the Home Depot are all important because their companies provide


home services and international trade.

international trade and domestic jobs.

domestic jobs and majority market share.


majority market share and home services.

Answers

international trade and domestic jobs.

Answer:

b. international trade and domestic jobs

Explanation:

The entrepreneurs who developed Coca-Cola, Delta Airlines, and the Home Depot are all important because their companies provide international trade and domestic jobs. Coca-Cola and Delta have a majority market share, but only the Home Depot provides home services. All three companies provide jobs for Georgians and have locations outside of the United States.

In the classic "bobo doll" research, bandura, ross, and ross (1961) demonstrated that _____ may be acquired through observational learning.

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The answer is "Aggressive behavior".

Aggressive behavior can make physical or enthusiastic mischief others. It might go from verbal abuse to physical mishandle. It can likewise include hurting individual property. 
Aggressive behavior damages social limits. It can prompt breakdowns in your connections. It can be evident or cryptic. Occasional aggressive upheavals are normal and even ordinary in the correct conditions. Notwithstanding, you should address your specialist on the off chance that you encounter forceful conduct regularly or in designs.

Why did people first begin flocking to Cape Town in the 1890s? A. Gold was discovered. B. Equal rights were available. C. Cape Town was a neutral territory. D. Cape Town was a well-known vacation spot.

Answers

Why did people first begin flocking to Cape Town in the 1890s?

B. Equal rights were available

hopefully it's help you

Instinct approach theorists believe that ______________. there is a connection between internal physiological states and outward behavior the instinct for territorial protection may be related to aggressive behavior humans have physiological needs that must be met before achieving self-actualization achievement motivation appears to be strongly related to success in school

Answers

The correct answer is the second mentioned choice above in which the instinct for territorial protection may be related to aggressive behavior. It is because the instinct approach is defined as a way of individual’s instinct is to be reproduced is through the instinct for territorial and as well as sexual behavior in which the protection are to be associated with the individual’s aggressive behavior.

A(n) __________ decision is a decision in which two conditions must be true for an action to take place.

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The answer is "AND" decision.

In an AND decision, two conditions must be valid for a subsequent move to make. An AND decision needs a nested decision or the utilization of an AND operator. In an AND decision, the most proficient approach is to begin by making the inquiry that is more averse to be valid.   

Times may seem bleak. children are graduating from high school unable to read at grade level or understand mathematical skills. schools are faced with discipline problems such as skipping classes, drug abuse, and violence on campus. but the situation is not as bleak as it first seems. there is a solution to the problems our children face. parents can make a tremendous difference. parents must become more involved in all aspects of their children's lives. parents must not view schools as the primary educator of children. education begins and continues at home. there is no doubt that parents face many stresses that families in prior generations did not face. one such problem is the number of parents who are single. there is no doubt that raising a family alone places stress on time and resources. however, this sad truth does not change the fact that children must have the support, time, and attention of their parents to reach their full potential. the solution is not easy, but it is apparent. parents, you are important. your efforts matter. you can be beacons of light that dispel the bleakness of our times. the primary purpose of this passage is to:

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The primary purpose of this passage is to bring attention to the fact that times are dismal but also to give hope to people that they can help change the world and it's problems.

According to emile durkheim, _____ gives groups social solidarity because members of a group feel they are part of one society

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i believe the asnwer is: collective consciousness
collective consciousness would make members of society feel more united because it tend to give them with one same purpose.
For example, despite the fact that the reason horrible, we could see Nazi Germany as a society that had a solid collective consciousness to make their nation and race become the most superior in the world.

Emile Durkheim identified mechanical solidarity as the binding force in small, preindustrial societies where shared work and values create a strong sense of community.

According to Emile Durkheim, mechanical solidarity gives groups social solidarity because members of a group feel they are part of one society. Mechanical solidarity is found in small, preindustrial societies where people engage in similar work, have strong kinship ties, and share common values and beliefs, which in turn fosters a collective consciousness. This collective identity binds members together, creating a sense of togetherness and uniformity.

Which entity was responsible for the process of selective incorporation of the Bill of Rights into the practices of the states?
State Courts
Supreme Court
The Executive Branch
Congress
State Legislatures

Answers

4) Congress

The selective incorporation is a doctrine that makes the first 10 amendments of the U.S. Constitution (The Bill of Rights) also applicable to the states through the Due Process Clause of the Fourteenth Amendment. Prior to the doctrine, the states weren't constitutionally obligated to follow those rules.

The 14th Amendment also determined who must enforce the provisions of its Amendment, as section 5 states:

The Congress shall have power to enforce, by appropriate legislation, the provisions of this article.

Supreme Court is responsible for the process of selective incorporation of the Bill of Rights into the practices of the states.

 

Further Explanation:

The Supreme Court in the United States is a ‘Federal Court’ with ‘Federal Judiciary’ having ‘original jurisdiction’ and ‘appellate jurisdiction’ over Federal Courts of all the states.

The “Federal Configuration” of America has distributed its “power” into three branches, namely, judicial branch, executive branch, and the legislative branch with a “bicameral division”. The judicial branch evaluates and invalidates the “statues” that are considered as profane to the ‘Constitution’ of America. The court has right to overturn the “Presidential directives” in case of disobedience of constitutional laws.

In the year 1833, the “Supreme Court” specially held that the “Bill of Rights” merely applied to the “federal government” and not to “state governments”

 

Learn More:

1.      In the case roe v. wade, the supreme court ruled that state laws

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2.  Though the outcomes of Schenck and New York times differed, what did these decisions have in common? The government has a heavy burden to prove harm. The government can limit speech that causes harm. The government has unlimited power to limit speech. The government must follow the first amendment.

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Answer Details:

Grade: College

Chapter: Supreme Court

Subject: Social Studies

 

Keywords:

Supreme Court, federal court, federal judiciary, judicial branch, executive branch, legislative branch, presidential directives

"which characteristic of effective citizenship best describes what president coolidge is referring to?
a.voting
b.tolerance
c.patriotism
d.volunteerism"

Answers

I believe the answer is C. Patriotism.
Patriotism means the act to give support for our country's interest and put it above our own interest.
and He mentioned that effective citizenship means that you should looking out for yourself by looking out for your country.

The Answer is B tolerance

In a totalitarian government, ______.

authorities maintain total control over the lives of the people
authorities want total agreement between elected officials
authorities require total participation in elections
the government is totally controlled by the aristocracy

Answers

A. Authorities maintain total control over the lives of the people

Totalitarian starts with the word “total” meaning total control. Totalitarian leaders control housing, education, business, labor and wages, press and food supply, to name a few. People in these places have little to no options and are usually extremely oppressed.

Answer:A

Explanation:

One objection to the three-box model of memory is that
a. short-term memory is not usually involved in the conscious processing of information
b. the brain performs many independent operations simultaneously
c. sensory register is actually able to store information for 30 seconds
d. there is a limit to the capacity of long-term memory

Answers

Final answer:

The main objection to the three-box model of memory is that it fails to acknowledge the brain's ability to perform many independent operations simultaneously, as it suggests an overly linear memory process. The other objections listed do not accurately critique the model's components.

Explanation:

The three-box model of memory posits that the human memory system consists of three separate but interconnected memory stores - sensory register, short-term memory, and long-term memory. Each store has a specific capacity and duration of storage. One common objection to this model is option b. - the assertion that the brain performs many independent operations simultaneously. This criticism stems from the idea that the three-box model oversimplifies the complex nature of memory mechanisms in the human brain. It implies an overly linear process without adequately accounting for the parallel processing capabilities of our cognitive system.

The other options do not accurately represent the objections to the model. Option a is incorrect as short-term memory is indeed involved in the conscious processing of information. Option c misrepresents the capacity of the sensory register, which typically holds information for less than a second. Option d is also inaccurate as there is no definitive limit to the capacity of long-term memory.

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Final answer:

a. short-term memory is not usually involved in the conscious processing of information is Correct Option

The three-box model of memory faces criticism for its oversimplified and linear representation of memory storage and processing in the brain. Critics argue that it fails to address the complexity and interaction of sensory register, short-term memory, and long-term memory. Furthermore, the model's assumptions about short-term memory's role and the capacities of long-term memory and sensory register are also disputed.

Explanation:

One common objection to the three-box model of memory is that it fails to account for the fact that the brain performs multiple independent operations simultaneously. This model, which includes the components of sensory register, short-term memory, and long-term memory, can oversimplify the complex processing of information in the brain.

According to the model, information moves linearly from sensory register to short-term memory and then to long-term storage. However, cognitive neuroscience research suggests that processing in the brain is often parallel, not sequential and there is a continuous interaction between these reported 'levels' of memory.

Another objection is associated with the capacity and nature of each component. For instance, short-term memory is indeed involved in the conscious processing of information, contrary to what the model suggests. For some researchers, the sensory register is also questionable as it is assumed to hold information for only a couple of seconds, not 30. Lastly, while the model suggests a limitless capacity for long-term memory, some scientists argue that there do appear to be limits to storage.

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