Why is anaerobic respiration considered less efficient than aerobic respiration? a less energy is required during anaerobic respiration than aerobic respiration. b more oxygen is required for anaerobic respiration than for aerobic respiration. c more atp molecules are gained in aerobic respiration than in anaerobic respiration. d less lactic acid is formed during anaerobic respiration than during aerobic respiration.

The diagram below shows the layers of a rock having a trilobite: a rock column labeled rock is shown. the column has three layers. the bottommost layer of the rock has one shaded rhomboid shape, the middle layer has a rhombus with a diagonal along with two identical organisms marked as, trilobite, in the key, the top layer has two semicircles. a key is shown on the right side of the diagram. the shaded rhombus is marked as a, the rhombus with the diagonal is marked as b, the semicircle is marked as c which statement about the rock fossils is true?