Based on the information in the passage, the two correct answers that complete the graphic organizer are:
- to cool the brain
- to build up oxygen
These causes align with the purpose of yawning as outlined in the passage.
Use the passage from “Why are yawns contagious? We asked a scientist.” to answer the question.
Effect: We yawn.
Cause: to quickly expel carbon dioxide
Cause: to drive oxygen-enriched blood to the brain
Cause: to stretch internal organs
Cause: ?
Cause: ?
Based on the information in the passage, which cause completes the graphic organizer? Select the two correct answers.
(1 point)
Responses
to compress facial muscles
to compress facial muscles
to increase the frequency of deep breaths
to increase the frequency of deep breaths
to build up oxygen
to build up oxygen
to increase adenosine levels
to increase adenosine levels
to cool the brain
to cool the brain
1 answer