Which of the following is the best definition of the term system? A. The broadest level of organization of living things on Earth
B. A group of organs that work together to carry out the same
function
C. A large geographic region that has similar weather, plants, and
other organisms
D. A group of interrelated parts that work together to form a
functioning whole

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 

what are the options? add them, then i will be glad to .

prothallium

explanation: