The ANALOG FORECASTING METHOD is known as the oldest method in the forecasting of weather. This kind of method reviews the previous weather events in order to lead to a particular weather event. Hope this helps.
The smallest particle of any type of matter would be an Atom
Skeletal system.
Without a proper skeleton, we would not have enough rigidity to properly move. We'd be an awkward pile of skin, muscle & bodily fluids.
Hope that helps!
I think the Belt of the inter-tropical convergence zone is the general part of the general circulation found on the doldrums. This is a belt of low pressure which circles the Earth generally near the equator where the trade winds of the Northern and southern Hemispheres converge. Mainly characterized by convective activity which generates often vigorous thunderstorms over large areas.