Riddles, I speak without a mouth and hear without ears. I have no body, but I come alive with wind. What am I? Answer will be told after you guess.

An echo speaks without a mouth and hears without ears. It comes alive with wind. Hence, 'An echo' is the required answer to this riddle.

Explanation:

that's so easy i know that 1

well off of my head we know that the perfume bottle is most likely opened, or broken. i can also tell it is moving at low and high concentration because it is covering the other side of the room. what we can obtain from this information is it explains why the odor can be detected at the other side of the room.

the answer is d.) potassium