At the inferior end of the trachea is an internal ridge of mucosal covered cartilage that initiates a cough reflex when it is stimulated; this structure is the

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 

if you add everything up correctly you should get 69 i got this because 50 plus 19 is it