Commercial agriculture typically practices subsistence agriculture practices
A. Polyculture, Monoculture
B. Pesticide use, Herbicide use
C. Monoculture, Polyculture
D. Hand tilling, Solar concentrators

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg 

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added