What happens to the O2 and CO2 levels when one sprig of Elodea and one snail are put into a test tube with the lights on after a 24 hours?

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 

wegner's theory did not explain how the continents could move

explanation: