How does the speaker establish her credibility? She uses a metaphor. She reviews her main points. She refers to her consulting position and her college teaching experience.

Greg goes to a high school and observes the way students talk to each other. he makes notes on the words used, the atmosphere of the school and the way the students present themselves to each other. this is an example of a( research method.

The state fire marshal ensures a program can legally operate in a specific location and has sound structure?

Did egypt invent wheels or sailboats