The boy asks for D. a coat in return
í nєvєr hєαrd thєѕє nαmєѕ вєfσrє, rєαllч ѕσrrч mαtє :)
What are the options tho? And what book is this?
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.
