Jennifer is studying the way cats learn to associate the sound of a can opener with food. In order to create the association in the cats, what is the minimum amount of time that should occur between using the can opener and presenting the food?

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 

answer; (b) clear with a slight blue tint;

what about it?

is this a ?