Top Posters
Since Sunday
w
3
w
3
e
3
3
r
3
b
2
M
2
V
2
f
2
c
2
c
2
K
2
Home Q & A Board Biology-Related Homework Help General Biology
New Topic  
mrsbmarie mrsbmarie
wrote...
Go to Answer
Posts: 291
Rep: 0 0
6 years ago
The scientists found that the level of carbon dioxide in the air did not cause college students to yawn more frequently. What other experiment could they conduct to confirm that they should reject the hypothesis that yawning is regulated in the same way as breathing?
A) Test the effect of hemoglobin amounts on the frequency of yawning.
B) Test the effect of exercise levels on the frequency of yawning.
C) Test the effect of carbon monoxide (CO) levels on the frequency of yawning.
D) Test the effect of diet on the frequency of yawning.
Read 36 times
2 Replies
Replies
Answer verified by a subject expert
lpvnnwclpvnnwc
wrote...
#1
Posts: 197
Rep: 28 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free

Related Topics

mrsbmarie Author
wrote...
#2
6 years ago
Thank you
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  476 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 328
  
 1335
  
 237
Your Opinion
Do you believe in global warming?
Votes: 488
Previous poll results: Who's your favorite biologist?