Answered

IDNLearn.com is designed to help you find the answers you need quickly and easily. Join our interactive Q&A community and access a wealth of reliable answers to your most pressing questions.

46. Yawning may be caused by
A. high oxygen concentration in the blood.
B. high lactic acid concentration in the blood.
C. high carbon dioxide concentration in the blood.
D. high urea concentration in the blood.​

Sagot :

None of these seem to be correct, but it seems c is due to a disproved myth that essentially is the only thing close to an answer.
Thank you for being part of this discussion. Keep exploring, asking questions, and sharing your insights with the community. Together, we can find the best solutions. Your questions are important to us at IDNLearn.com. Thanks for stopping by, and come back for more reliable solutions.