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
Andrej [43]
2 years ago
11

Science has 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 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.
English
1 answer:
neonofarm [45]2 years ago
8 0

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. :)

You might be interested in
While on vacation last year, Sara rode in a hot air balloon. Yesterday at the book store, she saw a picture of a hot air balloon
expeople1 [14]

Answer:

i believe its A) self to text

Explanation:

5 0
2 years ago
Read 2 more answers
HELLLLLLP! I NEED HELP PLZ!
andre [41]
Part A: A.
Part B: C

thats mainly it. Im not really sure if it's correct since I didn't exactly read the poem that you have, but from my perspective, these are the correct answers
3 0
3 years ago
What is beauty in your own words?
chubhunter [2.5K]

Answer:

Beauty is something unique and powerful. Anyone could have it. We find beauty in everything. That's mostly how some people fall in love because of the other's beauty. Beauty is both Beautiful and Horrible. Beauty can get you in dangerous situations but also good situations. We all fall in love with beauty. Other people might not see what some people call beauty, someone could find something so beautiful but others probably don't see like they do. Beauty is different for everyone. We all find something beautiful.

Explanation:

8 0
2 years ago
Read 2 more answers
Plz help ASAP!<br> 10 Points and BRAINLIEST!<br> English 10A CCA
8090 [49]
1.) illustrate the novel

2.) tow-head

3.) it is where Jim and Huck are in chapter 14
8 0
3 years ago
Read 2 more answers
How to ask a boy out if you like him pls i need a lot of help
murzikaleks [220]

Answer:

just be your self when  i first met my bf i was myself but there was a bit of a problem . if he doesnt like your true self then u need to find someone else

Explanation:

5 0
2 years ago
Read 2 more answers
Other questions:
  • Write a brief accoubt on management of forest and water resources
    6·2 answers
  • 2. Margo read two epics. The first epic is the story of a soldier who got lost at sea and sailed for many years before finding h
    8·1 answer
  • When joining two independent clauses with a comma, a _______________________ needs to accompany the comma
    10·1 answer
  • 1,2,3 Please help me :)
    9·1 answer
  • Whats the best musical you ever seen?
    7·1 answer
  • How do we address the negative randomness of life in reference to "To a Mouse" by Robert Burns?​
    10·1 answer
  • HaPPy FrienDsHip DaY tO All mY DeaR FriEnDs^_^❤️​
    9·2 answers
  • Describe the Trans Atlantic Slave Trade. What were the living conditions? What were slaves expected to do on the ships? ​
    8·1 answer
  • Why does the man's second fire go out?
    8·1 answer
  • I want to know the answer pls
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!