1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Delicious77 [7]
3 years ago
12

Science nas given humans many amazing devices and useful bits of knowledge. We know so much about our bodies and how to stay hea

lthy, 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
IS 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 is behavior still is largely a mystery, one thing is certain: you are probably
fighting the urge to yawn right about now.
According to the text, what is one purpose of the yawn?
TO encourage the brain
O To find all the answers
O To wake up the body
O To exercise facial muscles
English
2 answers:
kipiarov [429]3 years ago
7 0

Answer:

To wake up the body

Explanation:

Nitella [24]3 years ago
4 0
To wake up the body is the answer.
You might be interested in
I am delighted when I am told, "Some are born great, some achieve greatness, and some have greatness thrust upon 'em." Who am I?
Finger [1]
You are Malvolio. Malvolio gets a letter from who he thinks is the wealthy countess Olivia, which suggests that she loves him. (It's a trick-people that he;s upset because of his snooty behavior have decided to spite him.)
So, t<span>he letter suggests that Olivia will show favour towards Malvolio and by doing that he will have greatness (high status) thrust upon him, and he is pleased to read this. </span>
5 0
3 years ago
Explain the qualities and/or components of the Exemplification rhetorical mode of writing.
Andrew [12]

Answer:

no u

Explanation:

5 0
3 years ago
When writing a draft of an informative essay, a writer should try to avoid including information from ??????????? sources.
Natali [406]
The author should avoid using information that is biased or "unreliable". 
They should use reliable and credible sources. 
8 0
3 years ago
Read 2 more answers
In spires of the snakes repulsive nature, why do you think God created it?​
olganol [36]

in spires of the snakes repulsive nature, why do you think God created it?​

5 0
3 years ago
Every one has................. Signature which sometimes is very difficult to understand
xz_007 [3.2K]

Answer:

yes. people have different types of signatures.

They creates their own signature by thinking themselves.

Some people likes unique signature, some like stylish sinature and some like normal one.

Explanation:

plz mark me brainlist

8 0
2 years ago
Other questions:
  • I AM TIMED! BRAINLIEST!
    13·1 answer
  • Which three of the following are themes found in the story “Black Girl?” *
    14·1 answer
  • In a 1984 book, Claire C. Robertson argued that, before colonialism, age was a more important indicator of status and authority
    13·1 answer
  • “Let this pernicious hour Stand aye accursed in the calendar!” What does pernicious mean?
    7·2 answers
  • Read the lines from Act II, scene iii of Romeo and Juliet.Mercutio: Where the devil should this Romeo be?Came he not home to-nig
    9·2 answers
  • How does henry david thoreau use logos in "resistance to civil government"?
    9·2 answers
  • Coleridge was different from Wordsworth in that he was _____.
    6·2 answers
  • The author includes the following sentence in the text to provide
    11·1 answer
  • Casey is developing an essay about writing as a profession. She has used an interview conducted with Margaret Atwood as evidence
    12·2 answers
  • At the library I found a fascinating book called Coming to America immigrants from Eastern Europe, by Shirley
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!