Which factor influencing the distribution of life in the ocean (tides, currents, or waves) is the most influential? why do you think so?

The answer is currents.  It is the most influential in the distribution of life in the ocean.  Currents are important in marine ecosystems because they distribute anew water, heat, nutrients, and oxygen about the ocean. At the same time, currents certainly sweep over and carry off living organisms  It strongly  influence the distribution and abundance of marine life.. 

Efficiency is an action of doing something. for example when you take a test. good efficiency means you did well but bad effeciency or no effiency means you did bad.