4 years for being appointed.
Brainliest please!
27 amendments in the U.S. constitution
Wave length because your measuring the length of the wave I believe this is the correct anwser
Answer:
This effect is best explained by the facial feedback theory.
Explanation:
The facial feedback theory states that your facial expression influences your emotion and how you feel.
In this scenario, other students in Eileen's class respond to her smile by smiling in response which automatically causes them to feel happy.
