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:
i would be excited to be president but i would also be professional and be the best black president
Explanation:
I had a teacher once tell me allot of times the summary will be in the first sentence and sometimes it may be in the last
I believe it's A) It build readers' sympathy for the speaker and his problem because it builds on how young they were when they fell in love with each other.
