Describe how friction can cause a buildup of electrical charges

plz need !

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 

ask your friends for what they got then copy it down if you don't have any friends which is fine than google it or pay the teacher