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 line from the text shows why scientists continue to study yawning?

One thing is certain: you are probably fighting the urge to yawn right about now.
Other scientists believe, however, that yawning is a form of communication.
One mystery that still remains unsolved is why we yawn—what makes us yawn and what purpose it serves.
The theory is that yawning helps cool the brain, allowing it to work more efficiently.

Answers

Answer 1

Research on humans tells us that people who are more empathetic tend to be more susceptible to contagious yawning. When you see someone else yawn, the networks in your brain responsible for empathy and social skills are activated. :)


Related Questions

Two bills and a letter were delivered by the mail carrier. in correct sentence

Answers

Answer:delivered is an passive verb.because the two bills and letter were delivered in the past. 

Explanation:

1 2 3 4
4. Which statement best describes the relationship
between specificity and self-defining memories?
O A The more specific the memory, the more likely it is to
be self-defining.
OB The less specific the memory, the more likely it is to
be self-defining
OC The less specific the memory, the less likely it is to be
self-defining
OD Self-defining memories can range in speciñcity from
highly specific to generic

Answers

the answer is “the more specific the memory, the more likely it is to be self-defining”

please solve the given problem please

Will mark BRAINLIEST

Answers

Answer:

B

Explanation:

it is in most standard form. e.g

to fight.

where the others are not as an infinitive.

A. He played hockey brilliantly


Explanation:

Infinitive verb is to use “ to” in every sentences if there’s a adjectives

VI. What are the different punctuation marks we use in writing sentences? Give the name and the symbol. Different punctuation mark 21. Declarative Sentence ( ) - 22. Interrogative Sentence ( ). Imperative Sentence 23. Request Sentence ( ) 24. Command Sentence ( ) 25. Exclamatory Sentence ( )​

Answers

Answer:

21 (full stop/ period(.)) 22 (question mark(?)) 23 (impreative) (full stop/period(.)) 24. (request) (question mark(?)) 25 (full stop/period(.)) 26 (exclamation mark/exclamation point(!))

what's similarities of between types of conjuction?​

Answers

Answer:

A conjunction is a word that connects two or more words, phrases, or clauses. There are many different types of conjunctions in the English language, but some of the more common ones include and, or, but, because, for, if, and when. Conjunctions are classified into three types: coordinating, subordinating, and correlative.

Answer: By contrast / In contrast These two conjunctions are exactly the same and are used in a similar way to however or on the other hand to introduce a contrast or a comparison. Put By / In contrast at the beginning of a sentence, with a comma (,) after contrast.

Explanation: By contrast / In contrast These two conjunctions are exactly the same and are used in a similar way to however or on the other hand to introduce a contrast or a comparison. Put By / In contrast at the beginning of a sentence, with a comma (,) after contrast.

Helpppp
What elements of support does the author rely on to achieve credibility ​

Answers

Authors that are regarded in their fields of study write credible sources. Authors that are responsible and reliable will reference their sources so that you may verify the correctness and validity of what they've written. (You may also use this to discover other sources for your own study.)

1. When you are writing, it is preferred
that you use
as much as
possible.
O active voice
O passive voice
O balanced voice
O detached voice
2. Identify the sentence written with
passive voice.
O My brother gave me a hug.
O The ballots were collected.
O A stray dog chased the cat.
O I cooked a steak for lunch.
3. Identify the sentence written with
active voice
Olate lunch near the river.
O A ladybug was released outside.
O The deer was seen by the campers.
My ring was cleaned by the
jeweler.

Answers

Answer:

1. active voice

2. the ballots were collected

3. the deer was seen by the campers

Which sentence is correct?
We watch the TV show "Are you Afraid of the Dark?" every week.
We watch the TV show Are You Afraid of the Dark? every week.
We watch the TV show "Are You Afraid of the Dark?" every week.

Answers

The first one.

Explanation: It has the right punctuation and capitalization.

the correct answer is the third option

Which detail from the story BEST reveals that the tarcliraptor is
not what Cyprus and Lutra had expected?
It reached its muzzle forward
and rubbed Lutra's hand
amiably.
CHRISTIN GUER
s'alarm clock started him awake. He sat up
ly, rubbing his eyes. Sure enough, he could
ne last bits of sunlight fading around the
of his window shades. He checked the clock
yup, it was 8 PM Time to get up.
s lived in the city of Chiroptera, a dark cluster
dings spiked up on the bare Lycaon desert.
tera was a nocturnal city where everyone
in the evening, worked or went to school
he shadow of night, and returned home to
with the shades drawn all day.
It sniffed her hand, flaring its
giant nostrils.
Its gappy teeth clattered
together like wind chimes in a
dust storm.
It was taller than a grown man
and wider than a bus.
2 3 4 5 6 7 8

Answers

The detail that shows that tarcliraptor is not what the characters expected can be seen in the sentence "It reached its muzzle forward and rubbed Lutra's hand amiably."

Why is this sentence significant?Because it shows that the creature was affectionate.Because they show that there was no danger.Because it shows that the creature was friendly.

This is a breach of expectations of the characters because they thought that the tarcliraptor would be something violent, dangerous, and cruel, but they saw that they were very wrong and that the reality was completely different.

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Why were the Mongols so successful?

Answers

Answer:

A combination of training, tactics, discipline, intelligence and constantly adapting new tactics gave the Mongol army its savage edge against the slower, heavier armies of the times. The Mongols lost very few battles, and they usually returned to fight again another day, winning the second time around.

Write an essay of at least 750 words exploring the critical debate surrounding this play and take a stand: Is this a play which holds Faustus as a romantic rebel or does the play present Faustus as an example of
folly? Cite at least two critical sources and at least three passages from the play to support your analysis.

Answers

The goal of the question is to define or make clear the Dr. Faustus character. After looking at the play's specifics, one may easily come to the conclusion that Dr. Faustus was more of an illustration of folly.

What do you mean by character?

A character in fiction is a human or other being who appears in a story. The distinction between a "real" and "fictional" character may be made depending on whether the character is wholly imaginary or is based on a real-life person.

The English word, which comes from the Ancient Greek, was first used during the Restoration, however it gained popularity after Henry Fielding used it in Tom Jones in 1749. This led to the development of the concept of "a part played by an actor."

Generic stock characters, which are typically uninteresting, can also be used by authors to create fictitious characters. They frequently serve as auxiliary or supporting characters. However, some writers have built highly complex characters from the ground up using stock characters as the inspiration.

Learn more about character, here

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In the following sentence, which words most clearly represent technical language?

The director used a mix of dolly shots and freeze frames to give the audience an impression of
smooth movement opposed to sudden breaks in the action.

A. director; audience
B. dolly shots; freeze frames
C. an impression of; opposed to
D. smooth movement; sudden breaks

Answers

Answer:

Smooth movement ;sudden breaks

Director; audience are the words which most clearly represent technical language.

What is Technical language?

THis is defined as a common core language which has specialized content and used in professions.

'Director' and 'audience' are words which are used in the film industry which is why option A was chosen.

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#SPJ2

The Ten Commandments point to us how to live as Christian witnesses in a world where the culture seems to be contradicting such Christian values.

Answers

It is a false statement that the Ten Commandments point how to live as Christian witnesses in a world where the culture seems to be contradicting such Christian values.

What is the Ten Commandments?

The Ten Commandments was a list of religious precepts in the passages in Exodus with seeks to guide the human conduct.

In conclusion, the Commandment are basically provided rules that necessitate that Christians should conduct themselves ethically and morally and does not interfere with cultural views.

Read more about Ten Commandment

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Identify the figure of speech in following sentence!​

Answers

I believe it could be Assonance.

By the conclusion of the first conversation, Kim takes some time to move away from Stacy, they are grateful to each other for the meeting. In the second discussion, Kim does not appreciate the meeting between them but moves away instantly after the discussion was over meaning that the discussion was not important to her anymore.

Answers

Answer:

appreciate the little things in life

q Focus your attention on nutures and sustains you in life

According to the article, which of the following best describes
how 4DX and Sensurround experiences differ?
to by The Asahi
Setty Images
system sprays
Dan to match the
een action
Elience-grabbing
e the earliest
ake movie
les sight and
ts in specially
orks that may
Looks like the
streaming
A. Snacks are included with 4DX, while Sensurround has
odors to go with the on-screen action.
B. 4DX includes virtual reality goggles, while Sensurround
whipped up wind and rain.
C. 4DX uses 3D glasses, while Sensurround provided
viewers with hidden buzzers.
D. Several senses are engaged with 4DX, while
Sensurround only created vibrations.
SUBMIT
3:52 PM

Answers

Answer:

several senses are engaged with 4DX while Sensurround only created vibrations

Explanation:

this is the only thing in the article that is supported, and I already got the question correct

The words a or an and the are called articles.  Articles come before nouns. The correct option is D:-Several senses are engaged with 4DX while Sensurround only created vibrations.

There are two articles – a/an and the. The article a or an is called the indefinite article because it doesn't state which person or thing we are talking about.

How do 4DX and Sensurround experiences differ?

This is the only thing in the article that is supported, and I already got the question correct

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How does Bird use paragraph 22 to refine his ideas?
A. Bird includes the paragraph to list his accomplishments.
B. Bird includes the paragraph to encourage his reader to embrace what makes them
unique.
C. Bird includes the paragraph to dissuade the reader from choosing a path similar to his
own.
Bird includes the paragraph to prove that he was able to be successful in spite of the
adversity that he faced.
D.

Answers

A person can make use of different means in order to refine an idea and some of them includes:

To educate his readers.To inform them about something.To show them some entertainment.

What is Supporting Detail?

This refers to the use of evidence to show that that a claim is true and this is used to make sure that counterclaims can be easily refuted.

Please note that your question is incomplete so I gave you a general overview to help you get a better understanding of the concept.

Read more about supporting details here:

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True or False? There are countless ways to brainstorm.

Answers

Answer:

True

Explanation:

Hope that helps!

Answer:

True!!

Explanation:

Ways include:

Brainwriting 

Rapid ideation

Figure storming

Eidetic image method

Online brainstorming, aka brain netting

Round-robin brainstorming 

 Step-ladder technique

Mind mapping

Starbursting 

And Change of scenery

Have an amazing day!!

Please rate and mark brainliest!!!


What change should be made in sentence 2?
A Change signed to signs
B Change Metre to metre
C Change which to this
D Change weights and measures to Weights and Measures

Answers

Answer:

The answer is D

Explanation:

Proper nouns are nouns that refer to a specific person, place, idea, or event. The “International

Bureau of Weights and Measures” is a proper noun and should be capitalized.

Which sentence best states the thesis of this selection?

A
"We have heard a lot about carbohydrates in the news and on television lately, and not much of it has been good."

B
"We all know that potato chips, candy, pastries, and other foods with a high calorie content can add extra pounds on the body when not eaten in moderation."

C
"Eating carbohydrates gives the body energy to do the things it needs to feel good."

D
"The fact is, some carbohydrates are good for you and others are best avoided."

Answers

I believe it’s The answer to this question is B

What’s the answer??????

Answers

Answer:

drama

Explanation:

you persuade them to believe in it

Answer: The answer would be A, nonfiction.

Explanation: persuasive writing is usually nonfiction because most often then not you are persuading people about a fact or opinion that you have which is based on facts or evidence.

13. What does an adverbial phrase have that a prepositional phrase doesn't?
O A. A noun
O B. The object of a preposition
O C. An adjective modifying a noun
O D. A subject and a verb

Answers

An adverbial phrase actually has the following which a prepositional phrase doesn't have: D. A subject and a verb.

What is prepositional phrase?

A prepositional phrase is known to be a group of words that have a preposition and its object and any word that actually modify the object.

An adverbial phrase refers to a group of two or more words which acts like an adverb. It is usually used to add more details to a verb, adjective, or other adverbs in a sentence.

We can see that an adverbial phrase has a subject and a verb which is different from a prepositional phrase.

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When Laura tells Tom to allow their mother to tell her story again, what aspect of her personality do you see in her?

(Glass Menagerie)

Answers

Answer:

is there any example so i can answer?

How does stanza 1 help develop the poem?
A.
It shows the setting of the poem.
B.
It explains why every man cries.
C.
It describes how the infants cry.
D.
It summarizes the main idea of the poem.

Answers

Answer:

It shows the setting of the poem

The answer is definitely A. it shows the setting

You'd better take a taxi.
--, you'll arrive late

Answers

Otherwise

A negative transition could work but the most common one is otherwise.

You took to long to get to the taxi

Please help i don't know please e​

Answers

Answer:

Clotheslines, Pulleys, Crane, Engines, Fans.

Explanation:

I used context clues and my knowledge of the world.

Write an introductory paragraph on the topic: The benefits of E-learning. Underline your thesis statement

Answers

Answer:

E-learning has dozens of benefits. The learner gets to learn multiple topics at once without even knowing it. It provides supplemental experience. And much more, including stuff like discovery and comfort. The options are endless, but there is one point. E-learning is the best option because it provides many more learning and extension opportunities that they wouldn't have had otherwise.

E-learning provides supplemental experience. It includes stuff like discovery and comfort.

E-learning is the best option because it provides many more learning and extension opportunities that they wouldn't have had otherwise.

Write the benefits of E-learning?

Top 10 Benefits of eLearning

Online studying is designed to accommodate everyone's needs.

Reduced Cost.

Remote Approach To Various Classes.

Transfer Credits & Commuting.

Instant Career Advancement.

Quick Delivery.

Scalability.

Teacher Scarcity.

For more information about E-learning, refer to the link:-

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How does Elizabeth's character challenge other narratives about girl’s capabilities in the world? What makes you say that?

Answers

To challenge narratives about the capabilities of girls in the world, Elizabeth must question the roles assigned to women, refuse them, and settle into activities and behaviors that show that women are more capable than the roles assigned to them.

What are gender roles?They are pre-determined concepts through the gender of each individual.These are concepts that limit men and women.These are concepts that determine different behaviors and responsibilities for men and women.

It is common for the literature to show women in limited activities, which do not explore their potential and place them in a situation of vulnerability and submission. A character who defies this type of narrative must question these roles, not accept them and show them how incorrect they are.

You did not enter the text that Elizabeth is a character. This prevents me from being able to answer her question exactly, but I hope the above answers can help you.

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Hurry up wait for you. ! We Correct verb​

Answers

Answer: Hurry up we are waiting for you!

Underline the adjectives, including articles, in each of the following sentences.The number at the end of each line indicates how many adjectives are in each sentence. 1) The Kingdom of Heaven is like a man who traveled to a far country. (4) 2) He called his own servants and delivered unto them his goods.(3) 3) To one he gave five talents, but to another he gave two talents. (2)​

Answers

Answer:

1. The kingdom of heaven is like a man who traveled to a far country. (4)

2. He called his own servants and delivered unto them his goods. (3)

3. To one he gave five talents, but to another he gave two talents. (2)

Explanation:

1. far kingdom, far heaven, far man, far country

2. own servant, own goods, own deliver

3. five talents, two talents

Adjectives are words that describe or modify nouns and pronouns. Adjectives like red, swift, happy, and bothersome, for example, may describe a red hat, a rapid rabbit, a joyful duck, and an unpleasant human.

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