A specific defense is a(n)

The adaptive immune system.

Explanation:

Recognizes and attacks specific pathogens

Hope this helps!

--Applepi101

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 

true                                                                                                       true true true true true true