Ballad operas and singspiels were similar because

The answer is they were both sung in the language of the audience. Ballad opera in English Combined spoken dialogue with simple songs accompanied by basso continuo, characters were taken from contemporary life, and plots often featured political satire, words were in vernacular, music was simple and had catchy tunes, developed in England while to singspiel  Employed spoken dialogue and vocal style more like song than elaborate aria, developed in Germany. 

they were both sung in the language of the audience (apex)

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 

what in the weirdo : o