Atmospheric condensation nuclei: Group of answer choices always attract water vapor are required for haze, fog, and cloud development increase in abundance over the oceans versus over industrial cities require that humidity reach several hundred percent for water to condense onto them

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?