What causes hair to turn gray?

# What causes hair to turn gray?

• SCIENCE

If you are born with 4 toes that overlap, can this be fixed?

Toes that overlap can prevent many problems because the foot is not performing as it should be. In addition, there is also pain and discomfort associated with this condition. Toes that overlap is a…

• SCIENCE

What causes hair to turn gray?

Hair gets its color from melanin. This is produced by cells by the base of hair follicles. As people get older, the cells stop producing melanin, though scientists are not sure why–the building…

• GRAPHS AND GRAPHING

What are the four quadrants of the Cartesian Plane?

The Cartesian Plane is a method of mapping coordinates on a two-dimensional graph. The graph will consist of four quadrants divided by two lines, intersecting in the middle at a point designated…

• LIFE OF PI

Is Life of Pi a tragedy, romance, or comedy?

The novel has aspects of all three, but its most dominant themes fall in the tragedy and romance area. There are moments of comedy throughout the novel as Pi deals with his parents, his…

• FAHRENHEIT 451

In Fahrenheit 451, compare Montags desire for freedom from the control of his society to…

To me, the major difference between the two is that Caliban is actually being physically enslaved. By contrast, Montag’s loss of freedom is more mental. That means that Caliban’s desire to become…

• THE THINGS THEY CARRIED

In the chapter, “The Things They Carried,” why is it significant that Martha never mentions the…

O’Brien talks about many things that the soldiers in Vietnam carried. Some of these things are physical, tangible items, and some are emotions, and dreams of home. It is questionable which is the…

• MATH

How to solve these equations by using elimination method to find the x value and y value: 3x-y=…

3x-y=-6…(1) 2x-y =0….(2) To solve using the elimination method, we need to eliminate one of the variables by adding of subtracting equations By subtracting (2) from (1) we get: 3x-y -2x-(-y) =…

Compare and contrast the short stories “The Cask of Amontillado” and “The Most Dangerous Game”…

These are two of my favorite short stories, but I’ve never really considered them alike in any way. However, there are several similarities to the two. THE LURE. Both Fortunato and Rainsford are…

• LITERATURE

What are examples of irony in “The White Circle” by John Bell Clayton?

This is a great question! Any time there is a great reversal in a story, you can bet there is irony involved; and this story is no exception. A look at the two boys and their dads will reveal…

• SOCIAL SCIENCES

Which bit of the ‘ethical code of journalists’ are the two statements below breaking?Is it: a)…

For the the first statement, if the newspapers began to report information that should not have been disseminated from the police department, they would have violated the idea of limitation of…

• THE ELEMENTS OF STYLE

Share Thoughts about writing from William Strunk and E. B. White’s little book The Elements of…

For many of us who write, and for the teachers among us who teach writing, The Elements of Style is the Bible. In a time when so many of the words that come to us arrive through the wild world of…

• HISTORY

What were the causes of the American Revolution?Enough points that I can write a 5 paragraph eassay

There were of course a lot of causes of the Revolution. If I were you, I would talk about what it was about the French and Indian War and its aftermath that caused the Revolution. Before that…

• TO KILL A MOCKINGBIRD

In the book To Kill a Mockingbird what is the/a plantation?

I am not sure what you are asking… Are you asking what the name of the plantation was? If so, it was called “Finch’s Landing.” Are you asking what a plantation was? If so, a plantation was…

• MACBETH

I am writing an essay about how the witches were one of the most important components that…

This website provides the entire text of the most well-known scene with the witches from the play (Act IV, Scene 1): http://www.potw.org/archive/potw283.html I have also included it below. The…

• HISTORY

What was the first meaning of “Jack” to be used in English, since it has many unrelated meanings…

According to the Classic Encyclopedia, all meanings and applications of the word “Jack” come from its “pet formation” as a nickname of ” ‘John,’ which is its earliest and universal use in English;”…

I need to —using my textbook, the library, Internet, or any other available materials—post a…

I’ll give you instructions for posting a question on the discussion board. First, click on the Discussion tab on the main eNotes page. (It’s on the black line right beside Question and Answer.)…

• TO KILL A MOCKINGBIRD

What bad quality is shown about Atticus when Scout says “… he was trying to do but Atticus was…

Interesting topic! The quote you have pulled is a great example of how one character in the book thinks that perhaps Atticus is not a good parent. Another example would be Miss Caroline who gets…

• GUIDE TO LITERARY TERMS

I am looking for examples of many kinds of literary devices in common literature for an AP class…

The following examples come from Shakespeare’s Sonnet #130. In the sonnet, the speaker compares his lover to a variety of things. Imagery is used when he describes her lips: “Coral is far more…

• ROMAN FEVER

Discuss the irony and the symbolic significance of the title “Roman Fever”. What moral lesson, if…

The term “Roman Fever” is an old one for malaria. The title is a form of verbal irony because “Roman Fever” has a dual meaning: on the surface, it means malaria but it also symbolizes Alida’s…

• ROMAN FEVER

Title “Roman Fever” conveyed symbolic of the sentimental danger which affect not only Alida Slade…

“Roman fever” is a term for malaria. People used to believe you could catch it from being out in the cold. The “fever” aspect of the word has another meaning, referring to the reputation Italians…

• A JURY OF HER PEERS

When asked why she didn’t wake up while Mr. Wright was being strangled, why does Minnie Wright…

This is a great question! The answer can be interpreted in multiple ways. First of all, Minnie may mean that she was “on the inside” emotionally. Sometimes when people experience hurt or loss,…

• ROMAN FEVER

“Roman Fever” has a tight plot which its theme is revealed. Analyze the conflicts and climax of…

The themes of rivalry, love, passion and jealousy are important in this story. It does have a very tight plot- a lot is revealed in a short amount of time by very concise dialogue. If you’ll…

• ROMAN FEVER

“Roman Fever” reveals socially successful people in their true light, with all the hypocrisies….

The story does reveal the hypocrisies of the socially successful people in the story, but I don’t think one can make a sweeping generalization that all socially successful people are hypocrites….

• SCIENCE

What type of body functions does the medulla oblongata regulate?

The medulla oblongata is a part of the brain that controls many different autonomic functions, such as respiration and blood pressure. It is also involved in many cardiac functions as well as…

• SOCIAL SCIENCES

List two reasons in favor of government regulation of firms and two reasons for deregulation?

This would really depend on the type of firm that you are talking about and the kinds of regulation that you are envisioning. In general, the main reason to regulate firms is to prevent what are…

• JOURNALISM GROUP

Describe the legal and social constraints “patriotism of the audience” puts on journalists?

If a journalist is reporting about or reporting something to a very patriotic group, he must take into consideration his own integrity and the integrity of the media company (newspaper or TV) he…

• LAW AND POLITICS

Describe, in separate paragraphs, the Press Complaints Commission and the Equality and Human…

The Press Complaints Commission was created in January 1991. The purpose of the commission is to make legal judgments on complaints from individuals or public organizations about magazines and…

• JOURNALISM GROUP

Briefly describe the following areas of the ‘ethical code of journalists’, and how they constrain…

As with many other professional groups, the ethics for journalists include the “first do no harm” provision (this is the oath that doctors take). In journalism, this means that the reporters must…

• SCIENCE

Which are the animals disappeared from earth?

There are so many different kinds of animals that have disappeared from the earth (that have become extinct). I would suggest that you use Google to find a real list of them — just type in…

• MATH

prove that- (1) (tanθ)/(1-cotθ)+(cotθ)/(1-tanθ)=1+tanθ+cot θ (2)…

1) (tano) /(1-coto) + coto/(1-tan o)= 1+tano+coto we know that tan= sin/cos and cot=cos/sin Now by substituting: (sino/coso)/(1-coso/sino) + (coso/sino)/(1-sino/coso) = (sin^2)/cos(sin-cos) +…

• SCIENCE

I need help to complete my project on electricity.i want to know about daily used appliances…

It sounds as though you are doing what is called an energy audit – a review of how much energy you use. For everyday electrical devices you need to determine how much power they use and how many…

• THE GIFT OF THE MAGI

Can I please have a summary of ‘The Gift of the Magi’? Specifically the description of Della’s…

Della’s house is a “shabby little house.” It was an apartment that she and Jim rented for \$8 a week. It looks as if it were a home for beggars (“mendicants” is the word used in the story). It had…

• BRAVE NEW WORLD

Explain the difference and similarities between soma and prozac in all prespective(side…

• THINGS FALL APART

In Things Fall Apart, why is Obierika a kind of foil to Okonkwo?

In Things Fall Apart, Obierika is a spokesman for the author, Chinua Achebe. The author speaks through Obierika to comment on Okonkwo to the reader. In this way, Obierika is reflective: he is…

• HISTORY

What was pre-WWII Japan Like?

In terms of politics and the political system, pre-WWII Japan was officially a democracy. It had an emperor but he did not really have that much power. However, because of flaws in the way that…

• THE GLASS MENAGERIE

three different times in the story when my character demonstrated this trait, and a brief…

The first task in answering this essay prompt is to write the thesis statement: Which character have you chosen? Which character trait will you focus on? Then you should focus on finding lines…

• THE PEARL

What role do Juana and Kinno play in each other’s relationship in The Pearl by Steinbeck?examples…

Juana acts as a foil to her husband, Kinno. In a sense, she plays the traditional role of the mother as the heart of the family. She is cautious in her attitudes, feeling that it is “not good to…

• THE PEARL

How does the novel The Pearl relate to modern times and relationships?

The theme of this novella, a parable, is very pertinent to modern times. Be careful what you ask for. In this case, the motive was good. Kino and Juana prayed that they would find a pearl to use to…

• AN ASTROLOGER’S DAY

Attempt a character sketch of the astrologer, bringing out the qualities that make him succesful…

Character sketches should rely on a few specific things. You should choose a trait to focus on. What kind of character trait is necessary for an astrologer? Bravery? Intelligence? Curioisity? Once…

• THE PEARL

What is the parable in the story?

A parable is some type of story, usually simple, used to teach a moral lesson, truth, religious concept, etc. With this in mind, let’s consider the novella The Pearl by John Steinbeck. The…

• LITERATURE

show me the biography of dash benhur ?about dash benhur,his contribution towards literature,his…

Yahoo! Answers has a little bit of information about Dash Benhur, but I believe that his Facebook page would be more promising with the information you require. There is not much out there in the…

• SCIENCE

What is the largest amount of air that we can breathe in and out in one inspiration and…

The largest amount of air that a person can breathe in and out in one inspiration and expiration is called vital capacity. The capacity of a person’s lungs is proportional to the surface area of…

• HISTORY

How does the ideal society of Thomas More compare to the ideal State of Plato?

Throughout the history of philosophy, thinkers have speculated about the nature of the ideal society. Their solutions say as much about the nature of the philosopher as they do about the nature of…

• MATH

Solutions for logarithmic equation lnx+ln(x+1)=ln2

We know that lnx +lny = lnxy ==> lnx+ln(x+1) =ln2 ==> lnx(x+1) = ln2 ==> x(x+1)=2 ==> x^2+x-2=0 ==> (x+2)(x-1)=0 ==> x=1 ( We will not consider x=-2 as a solution, because…

• SCIENCE

Describe and explain how the human kidney is involved in excretion and how it regulates the…

Tiny cells in the kidneys called nephrons filter the blood, they are composed of the glomerulus and the tubule. You have thousands of nephrons in each kidney. The glomuruli act as the main filter…

• MATH

Calculate the domain of the function f(x)=1/(4x^2-1).

f(x)=1/(4x^2-1) The domain is x values in which the function is defined. Since the function is a root, then the denominator (4x^2-1) should not be zero. 4x^2-1=0 ==> (2x-1)(2x+1)=0 ==> x=…

• MATH

Evaluate limit x/(x+1)^2, x->+infinity.

limit x/(x+1)^2 x–> inf. First let us open the brackets: ==> lim x/(x^2+2x+1) Now let us divide by the highest power of the function which is x^2 ==> lim (1/x)/ (1+2/x)+1/x^2) Now…

• MATH

how to solve equation sinx-sin5x=0?

sinx-sin5x=0 We know that sinx-siny= 2cos(x+y)/2 * sin(x-y)/2 ==> sinx-sin5x= 0 ==> 2cos(3x) sin(-2x)=0 ==> -2cos3x * sin2x =0 ==> sin2x=0 or cos3x=0 when sin2x=0 ==> 2x= 2npi…

• BRAVE NEW WORLD

In Brave New World, what is soma? Can it be compared to Prozac?

Soma is a governmentally provided drug to the people living in the Brave New World. It represents a way to escape pain, discomfort, embarrassment, sadness or anger and to enhance joy, arousal, and…