Its flu season and a lot of people are getting the flu vaccine. This vaccine is to help boost the immune system by having the B-cells produce antibodies against the flu virus so that they are ready to attack just in case the person contracts the flu. Explain in detail 3 system interactions that aid the immune system with fighting off pathogens. I NEED HELP ASAP

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. until louis pasteur developed the rabies vaccine, “vaccines” had referred only to the cowpox inoculation for smallpox. hope this : )