Which organism is it?

i would number one

Explanation:

Eukarya, Archaea, and Eubacteria constitute the three major branches of living organisms (excluding viruses). Eukaryotes are organisms consisting of one or more eukaryotic cells, the most distinctive feature of which is the presence of a membrane-bound nucleus containing the cell's genetic information.

hope this helps

the answer to you question is   jet streams

the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy