The answer B.Since,Diffusion is driven by differences in concentration. When chemical substances such as perfume are let loose in a room, their particles mix with the particles of air. ... Diffusion in gases is quick because the particles in a gas move quickly. It happens even faster in hot gases because the particles of gas move faster.
Answer: A
Explanation:
the answer is A because it pretty much summarizes the paragraph.
Answer:
B. identify the flaws in a study
author provides his opinion as against opinion of the author of 'American Genesis'
A phrase is a group of words, without a subject or a verb, that functions in a sentence as a single part of speech. ... A prepositional phrase is a group of words that begins with a preposition and ends with a noun or a pronoun. This noun or pronoun is called the “object of the preposition
