The layers of the atmosphere are determined based on air temperature, which has to do with the energy of the molecules in the air. where does this energy originally come from?

What is the general rule about surface currents? cold water flows along the ocean floor towards the equator. the east coasts of continents have cold surface currents, and the west coasts of continents have warm surface currents. seasonal and constant offshore winds create significant upwelling along the west coasts of south and north america and africa. the west coasts of continents have cold surface currents, and the east coasts of continents have warm surface currents.

What body of water is the second cataract of the nile river submerged under

In the figure, polygon abcd is transformed to create polygon a′b′c′d′. this transformation is a by a factor of .