A) Animals that produce their own body heat and maintain a high body temperature are likely to be less efficient at converting food into biomass than are animals that do not regulate their body temperature. B) If the lowest trophic level of an ecosystem contains 1,200 grams of biomass per square meter, it is reasonable to expect the secondary consumer level to contain about 12 grams of biomass per square meter. C) Autotrophs typically capture about 90% of the available energy from the sun through photosynthesis. D) In a trophic pyramid, biomass represents chemical energy. E) Energy that could be used in the production of offspring by an animal is available to higher trophic levels. F) Energy contained in feces is available to higher trophic levels. G) Energy spent on cellular respiration is available to higher trophic levels.