Achange in the water temperature of the pacific ocean that produce warm current

1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division

How have the greenhouse gasses increased from the year 2000 to 2018

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?