Science Mysteries: Why Do People Yawn?

Science has given humans many amazing devices and useful bits of knowledge. We know so much about our bodies and how to stay healthy, for example. We also know how to make machines and devices that make life easy for us. Scientists dedicate their lives to knowledge, but even with a lifetime commitment, sometimes scientists fail to find all the answers. One mystery that still remains unsolved is why we yawn-what makes us yawn and what purpose it serves.

Recent studies suggest that we yawn when we get tired as a way to encourage our brains. The theory is that yawning helps cool the brain, allowing it to work more efficiently. According to WebMD's article about these studies, when you yawn, your jaw muscles get stretched, increasing blood flow to your neck, face, and head. Also a deep breath during the yawn forces spinal fluid and blood down from the brain. The cool air then cools down these fluids.

Other scientists believe, however, that yawning is a form of communication. This theory attempts to explain why yawning seems to spread from person to person. This kind of behavior is called "contagious yawning" and carries with it a possible social message. Scientists are not yet sure what exactly the message is, but they believe people who have more social empathy are more likely to start yawning when they see someone else yawning.

Scientists will continue to investigate the mystery of the yawn. Is it a leftover behavior from before humans had language? Was it a "Hey, I'm sleepy. Let's go to sleep" message? Or is it really just a way to keep our brains cool? While this behavior still is largely a mystery, one thing is certain: you are probably fighting the urge to yawn right about now.

Which word from the text best describes scientists' understanding of the yawn?

(5 points)
Question 1 options:

1)

Mystery

2)

Breath

3)

Language

4)

Message im in the middle of an English test will someone pls help me

Answers

Answer 1

Answer:

1) mystery i guess

Explanation:


Related Questions

Reread the first paragraph "In the Mouth of the Cave". How is stepping into a cave's environment like being in a new world?

Answers

Answer: Because you probably haven't been inside of 1 and its really knew exciting and interesting to you and might have new possibilites

Explanation:

Notes :( just answer questions 13 and 14 please and thank you )

Answers

Answer:

What fools these mortals be

How to end racism in the world

Answers

Answer:

have the south secede and not give 2 fu.cks. also anyone who supported trump can move there.

Explanation:

WILL GIVE BRAINLEST!!

Which word best completes the sentence? Select the word from the drop-down menu. To save the company, we will ___our long-term goals and focus on our immediate priorities.

A. Absolve

B. Redo

C. Subordinate

D. Transcend ​

Answers

Answer:

I think its A or D im not sure

Explanation:

Answer:

B. Redo

Explanation:

To save the company, we will redo our long-term goals and focus on our immediate priorities.

(hoped I helped you have a nice day :D)

The narrator says, “The day when he learned his wife had left him, the idea
of going out in search of her didn't even cross his mind.” What insight into
Juvencio's character can be drawn from this statement? *
A He is lost without his wife telling him what to do.
B He feels a tremendous sense of betrayal.
C He is so ashamed of what he has done that he never leaves his larg.
O D His concern is first and foremost for his own safety.

Answers

B or D???
I’m not quite sure I can only answer it fully if I have more context about what’s going on in the story. Sorry:(

describe a vignette as a genre to someone who has never heard of it.

Answers

Answer:

its a short.

Explanation:

What does this quote mean?"Life is as good as your mindset"​

Answers

Answer:

This quote means that your quality and interpretation of life is only as good as how you look at it. If you look at everything with a negative mindset, you'll only find the flaws in things, but if you're able to look at things in a positive light, you will find your life is better because you would find the beauty in things.

Please write a paragraph (5 sentences) describing how you make your bed.

Answers

Answer:

First, remove all covers and pillows and make sure the sheets have no wrinkles on it. Lay out your cover over the bed make sure its not messy its organized. Flip the front of the cover down which makes space for the pillows. Make sure your pillow sheets are on nicely and organized and its on entirely. Finally your bed is complete nicely and organized.

Explanation:

GODLY WORK please make me the brainlieast

Who is the father of American Literature?

Oliver Wendell Holmes
William Cullen Bryant
Washington irving
Henry Wadsworth Longfellow

Answers

Answer:

washington irving

Explanation:

he is the first American acclaimed by english literary establishmnt ad wrothy of recongnition....

Which detail from the story provides the best clue that the narrator's relationship with his mother changed after his sister's death?

Answers

The detail from the story which provides the best clue that the narrator's relationship with his mother changed after his sister's death is:

B. "I believe that she broke her capacity to fully love the rest of her children. Or maybe to fully love me." (Paragraph 22)

This question refers to "You don't have to say you love me," by Sherman Alexie. The author relates how his mother tragically lost three loved ones.The author's mother, in a matter of months, lost her brother, mother, and daughter. It was as if grief had come to permanently stay in her life.After losing her daughter, something changed in her. The author feels that she also lost the capacity to love him and his brother.As a teenager, he was angry. But his own love for her did not fade. He knew he would have to face life alone, but he did so bravely.

I was able to find the answer choices for this question online. They are the following:

A. "Today, as a non-superstitious adult, I still worry that I'm at fault. It's a ridiculous narcissistic worry." (Paragraph 10)

B. "I believe that she broke her capacity to fully love the rest of her children. Or maybe to fully love me." (Paragraph 22)

C. "I mourned with her and for her." (Paragraph 33)

D. "She didn't cry out my name. She didn't whisper it." (Paragraph 35)

Learn more about Sherman Alexie here:

https://brainly.com/question/16713310

points!!


watch out for the user Kritikal723 dont click any links guys

Answers

Answer: ok

Explanation: thank you for telling me

Answer:

thanks for the warning.

if a food has a ph level of 14 it is considered?

Answers

Answer:

Base

Explanation:

For the future remember

PH = less than 7, it is an acid.

If the Ph is more than 7, it is a base.

Empathy is usually helpful when...

Answers

Answer:

Its helpful When it help us to understand how others are feeling so we can respond appropriately to the situation.

Empathy is vital because it lets one understand how others are feeling so we can react adequately to the situation. It's normally related to social actions, and there's a lot of evidence that getting more empathy contributes to more helping behavior.

It is usually helpful to show empathy to a friend when they are feeling down.

Hope this helps; have a great day!

How can hashtags signal a story idea?

Answers

Answer:

Hash tags could be used to say what the story is about like #cats or #beleifs

I'm pretty sure.

What is the conflict (problem) in the story ? Book brothers in hope

Answers

During the late 1980s the conflicts were between the Muslim Arab government of the North and the non-Arab, Christian and Animist black Africans in the South. Thousands of Sudanese boys were orphaned when armed soldiers attacked their villages, killing their families.

What can you infer about Igbo customs from Okoye and Unoka's
interactions?

Answers

Answer:

Set around the turn of the century, the novel focuses first on the hero of the book, Okonkwo, and on his late father, Unoka. Okonkwo is a respected leader within the Igbo (formerly spelled Ibo) community of Umuofia in eastern Nigeria. About twenty years ago, Okonkwo distinguished himself and brought honor to his village when he wrestled and threw to the ground Amalinze the Cat, a man who had not been defeated for seven years. Since then, Okonkwo's reputation as a wrestler has grown throughout the nine villages of Umuofia. He is known to be quickly angered, especially when dealing with unsuccessful men like his father, who died ten years ago deeply in debt.

Because of Unoka's laziness and wastefulness, the community had considered him a failure and laughingstock; he was a continual source of deep shame to Okonkwo. Even though he had a family to care for, Unoka frequently borrowed money and then squandered it on palm-wine and merrymaking with his neighbors, thus neglecting his family who barely had enough to eat.

Explanation:

Is this cause and effect or compare and contrast?

In 1968, when the Democratic Party held its convention in Chicago to select a presidential
candidate, the United States was at war in Vietnam. Thousands of Americans and
Vietnamese had died in the war, giving rise to a growing anti-war movement. President
Johnson, a Democrat, declined to run for reelection, in part because of the heavy
opposition to his conduct of the war. Just months before the convention, both Martin
Luther King Jr. and Robert Kennedy were assassinated, contributing to widespread
unrest. Anti-war protesters wanted the Democratic Party to oppose the war, but they
were excluded from the convention. This set off violent clashes between police and
protesters on Chicago streets. The violence at the convention captured the nation's
attention strengthened the peace movement, and led to reforms in the nominating
process.

Which organizational structure does this text primarily use?

Answers

Answer:cause and effect

Explanation:bc I got the answer right that’s all I can say lol

What is an example
Of a extreme situation? Please hurry

Answers

Answer:

A tornado/hurricane so any natural disaster

Explanation:

a situation that is much more dangerous than usual.

t 1.2.2 Quiz: Understand the Elements of Rhetorio Question 1 of 10 Which term means an attempt to convince others that your position is correct? O A. Fighting B. Logos C. Persuasion D. Permission witch is the best term​

Answers

hey can u help just posted on english:(

The best term that means an attempt to convince others that your position is correct is "Persuasion". Therefore, option (C) is correct.

What is persuasion?

Persuasion is the act of convincing someone to adopt a particular belief, attitude, or course of action. It involves presenting arguments, facts, and evidence in a clear and convincing manner in order to influence the beliefs or behaviors of others. Persuasion is a fundamental aspect of communication, whether in personal, professional, or political settings. Effective persuasion requires a deep understanding of the audience and the ability to appeal to their interests, values, and emotions. It can be achieved through various means, including logical reasoning, emotional appeals, and the use of authority or expertise.

As "fighting" and "permission" do not always involve an attempt to convince someone, and "logos" refers specifically to the use of logic and reason in persuasion, the other options listed are not the best terms to describe this specific act.

Learn more about persuasion , here:

https://brainly.com/question/30499906

#SPJ7

What is the meaning of the allusion in the sentence below?
Buying that beat-up old car was like opening Pandora's box.

Answers

Explanation:

buying that scrap, broken, rusty car was like opening a birthday present

How does the tone of this article contributes to the author's writing purpose in writing? A. The pessimistic tone shows the author's belief that nothing changes

Answers

Hello. You did not enter the text to which this question refers, nor did you present the answer options, which makes it impossible for your question to be answered. However, I will try to help you in the best possible way.

The tone of a text refers to the feeling that the author of a text wants the reader to feel at the moment he is doing the reading. This tone promotes an atmosphere that intensifies the theme that the author is addressing. In this case, the author can promote a happy tone to reinforce the idea of achievements, progress, happiness, among other happy situations, as well as a sad tone to reinforce pessimism and defeat, a surprised tone to reinforce suspense and so on.

Answer:

its a

Explanation:

WILL GIVE YOU BRAINLYEST!!

A____paired with a
________will correct a
run-on sentence.

A.Period,
coordinating
conjunction

B.Comma,
coordinating
conjunction

C.Period
coordinating
conjunction

D.Semicolon,
coordinating
conjunction

Answers

Answer:

B.Comma,

coordinating

conjunction

__________________________

Hope this helps!

Claim: The school should only purchase and drive electric vehicles to help the United States decrease its dependence on foreign oil Which statement is an example of a major counterclaim to address in an argumentative research essay with this claim?

Answers

The question is incomplete, and the full version can be found on Brainly.

Answer: C. Converting to electric vehicles would be too costly for schools that are already facing severe budget problems.

Explanation:

A good counterclaim should directly address the main claim and be based on solid evidence instead of a mere opinion. The idea of electric cars electrocuting drivers is plainly untrue, as there´s no evidence to support it. Claiming that electric cars are ugly or the result of some kind of conspiracy can only be based on personal opinions, and are not a proper counterclaim. Only option C correctly addresses the main claim and provides a valid reason to oppose it. Budget problems in schools are widely known and would probably be a deterring factor for them to able to purchase electric cars.

8. Which score usually wins a golf match?

a. Highest
b. Lowest
d. Furthest from par
c. Closest to par​

Answers

Answer:

lowest

Explanation:

Answer:

a, highest

Explanation:

bcs the player with the most points wins the game

PLEASE HELP ASAP! :)))))


Which of the following relative pronouns best completes this sentence? "______________ wants candy has to sneak it into the movie theater themselves!"
Whoever
Whom
Whomever
He

Answers

Answer:

whoever

Explanation:

Answer:

Whoever

Explanation:

Review the spelling pattern in these words:


psychology knee wrinkle


Which word best fits this spelling pattern?



tomorrow



exaggeration



condemning



precede

Answers

Answer:

tomorrow

Explanation:

because of the spelling is easy to me

Answer:

condemning

Explanation:

What is the cause and what is the effect in the following quote?



"Because I woke every day at 7:00 A.M. (in spring, this was four or five hours after sunrise), I was exhausted by 11:00 P.M. You need a good night’s sleep to be ready for another exciting day on Palmer Station!"

Answers

The answers to the test is a

I would be very happy if you do

Answers

Answer:

2. I hate . . . Audacious People. (Rude)

3. I don't mind . . . Saving Time For Others.

4. I love . . . Helping People.

5. I can't stand . . . Self - Seeking People (Selfish)

6. I'm looking to . . . Getting Better On My Studies And Goals.

7. I Prefer . . . Helping People Rather Than Abandoning Them.

Explationation:

Hello! I think I did alright? Correct me if I am incorrect but I hope this somewhat helped I hope? Have a good one!

(ɔ◔‿◔)ɔ ♥

Rewrite the following passage in the Passive.
Some people saw a UFO in the sky above London last night. They reported it to the police. The army sent a helicopter to look at it more closer. The UFO shot the helicopter down and killed both men in it. People have given photographs of the UFO to the police. Experts are looking at them now.

Answers

Rewritten:

A UFO was seen in the sky above London last night. It was reported to the police. A helicopter was sent by the army to look at it more closer. The helicopter was shot down and both men were killed in it by the UFO. Photographs of the UFO were given to the police by the people. They are been looked after by the experts now.

What is the conflict on how my brother leon brought home a wife?

Answers

Answer: The highest point of the story is when Leon already brought home Maria as his wife. He introduced Maria as his wife to his family and especially to his father hoping they will accept and liked Maria for him.

Explanation:

The main conflict is Leon's father, he doubt that Maria can can live in a province where Leon-her soon to be husband live, because she grew up in a city.
Other Questions
Lines A and B parallel lines cut by the transversal c. If the measure of angle 5 is 123, what is the measure of angle 1?Will mark b if correct:) real ans only fast plzzno wrong ok The perimeter of a rectangle is30m. The length of the rectangle is3 m more than twice the width. Findthe dimensions of the rectangle a. 3m x 12mb 4m x 11mc 8m x 7m d 6m x 9m Explain how water and corn syrup are able to mix AYO CAN YOU BE MY BAKA (HELP ME WITH MATH) Find the value of x in the figure shown. - HealthcareThink of something you did today that involved both a stimulus (sensory neuron) and a response (motor neuron).Must also include interneurons and parts of the brain.36 points if you answer Tristan paid $17.50 to buy 2 pounds of peanuts and 3 pounds of cashews. Rivka paid $19.00 to buy 5 pounds of peanuts and 2 pounds of cashews. If both people paid the same price per pound, what was the price per pound for the cashews? A. $2.00B. $3.80C. $4.50D. $8.75 Will's suitcase must weigh less than 50 pounds. Choose the inequality that best represents the situation. a: x 50 b: a can somebody help me with this plzzz, I watched the video but I dont got it :( He is going to open the shop. (Find the correct passive form) examples of personification Francisco and Bernardo, two castle guards in Elsinore, Denmark, stand alert on the castle steps at night. This is part of the plotsexposition.climax.falling action.resolution. (2a^3 b^4) ^4= What is the answer to this problem ? Tyler and Daniel each deposited money into different banks with different savings plans. Tyler went toBank 1 and deposited $500. Daniel went to Bank 2 and deposited $1500. The graph above shows howmuch money is in each savings account after 14 years. According to the graph, who will have more moneyby year 20, and why?Daniel, because his money is increasing exponentially.O Daniel, because his money is increasing linearly.O Tyler, because his money is increasing exponentiallyTyler, because his money is increasing linearly A 0.40 kg soccer ball has 20 J of kinetic energy. How fast is it moving? PLS HELP WILL GIVE BRAINLIEST1. The organism represented by letter F is an?_________________2: Which letters contain organisms that are autotrophic? Some people think that we rely too much on eating convenience food nowadays.Here are two comments from your friends:I think it lets me have more time to do other things.I wish I knew how to cook things for myself.Write an article for your school newspaper, giving your views.The comments above may give you some ideas, and you should try to use some ideas of your own.Your article should be between 150 and 200 words long.You will receive up to 10 marks for the content of your article, and up to 9 marks for the style andaccuracy of your language. 7m+9, for m=2.Someone solve please The solution to which system of equations has an y-value of 0?(A) x + 2y=-1; y = 3x + 3(B) 3x y=2; x + 2y=-1y= 3x + 3; 2x + 3y=01(D) 2x + 3y=0; x + 2y=-1