Reathing in humans is driven by all of the following except
a. the diaphragm.
b. air pressure.
c. the muscles connected to the lungs.
d. the muscles attached to the ribs.

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