I would say tested anything scientific comes w a hypothesis and gets tested.
Ecological efficiency is the term used to describe how much energy will be passed from lower food pyramid level into the higher level. The amount of energy in primary level will be much higher than tertiary. The difference of level of tertiary(3) with primary(1) would be two level.
Assuming that the ecological efficiency is 10%, then the <span>primary consumer level would be: 50 kcal * 10^(3-1)= 5000 kcal</span>
The upper (landward) end of the intertidal zone, dominated by barnacles, limpets, chitons, and other encrusting species; The mid-intertidal zone, where fucoid algae and mussels provide structure and habitat; and. The low-intertidal zone is made up of kelps, fleshy seaweeds, and seagrasses.