If you mean dispersion it mean splitting light into 7 parts.
They are used to create artificial rainbow effects
Answer:
"Battles and Disputes" should be "battles and disputes"
That's two.
And "french" should be "French."
Explanation:
Answer:
Feedback.
Explanation:
Feedback is an output information of the performance of anything.
The gestures given in the question are examples of non-verbal communication. Non-verbal communication is communication that is not communicated through mouth or by words but by body language or gestures.
<u>The given list in question are all forms of feedback from the audience. When an audience listens to the speaker they give non-verbal feedback by making eye contact, nodding their heads on the points they agree with, even facial expressions of the audience is a form of feedback</u>.
So, all elements of the list in the question are a form of feedback.
