What does the lac operon in bacteria code for? lactose enzymes that break down lactose enzymes that synthesize lactose

Which anatomical plane is the only one that could not show both the sternal region and vertebral region

The law of thermodynamics states that energy can't be created or destroyed. to natural sources of energy on earth are the

Even though the ostrich is a flightless bird, ostriches still possess wings that stretch approximately two meters across when fully extended. scientists speculate that when dinosaurs became extinct, some of the birds that lived during that time became land dwellers since they were able to consume the food that the dinosaurs once ate. over time, these species grew larger and heavier. eventually, the ostrich species became too big to fly. the wings found on ostriches are known as a. analogous structures. b. homologous structures. c. vestigial structures. d. symmetrical structures.