Options: the white UN Emblem is super-imposed on a light blue background, the red UN Emblem is super-imposed on white background, the light blue UN Emblem is super-imposed on white background, None of the above
Benjamin Franklin was a prolific inventor. He invented the lightning rod, the Franklin stove, studied electricity, discovered the Gulf Stream, started the first library, and on and on. Among his many other inventions, what musical instrument did he invent?
The process of evaporation of water in nature is one of the basic components of the hydrological cycle. The other process that is considered to be essential for the completion of hydrological cycle is the
Options: flow tide and ebb tide in a river, movement of water vapour in the atmosphere, flow of water in the sea, movement of water in the water table