What type of structures modify and distribute polypeptides through the cell"

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above

Select the word from the list that best fits the definition the temperature to which air must cool to be saturated

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.