Which of the following statements is true? a. our galaxy contains many billions of universes, and each universe contains many billions of stars. b. the universe contains one galaxy, which contains about three million stars. c. the universe contains many billions of galaxies, and each galaxy contains many billions of stars. d. our solar system contains many billions of stars, and each star contains one galaxy. reset submit

a "theory" a suggestion that is not 100 % accurate, or a figure. some people say its a theory because they of all the passed theory's about one subject. it depends sometimes theory might be accurate and sometimes they are.

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