C- by describing experiments scientists have done about memory and smells
I think it is D because dialogue is a conversation
A negative pressure respirator brings fresh air to you through a hose Does a negative pressure respirator brings fresh air to you?
If a leak develops in a pressure-demand respirator, the regulator sends a continuous flow of clean air into the facepiece, preventing penetration by contaminated ambient air. ... Negative-Pressure Airflow Negative-pressure respirators draw air into the facepiece via the negative pressure created by user inhalation. ( can I plz have brainliest I need 4 more to have a new rank)
Answer:
The author adds connotation to some words to give it "feeling". Overall the words will give one specific mood or tone.
Explanation: