What is the function of the cell membrane? A. To determine what materials can enter or leave a cell B. To package proteins in an animal cell C. To contain the genetic information of an organism D. To transport materials throughout a cell

the areas around the equator

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