Which of the following examples describes an increase in potential energy? a: a bicycle going down a hill. b: a basketball falling through a net. c: a roller coaster moving down the track d: a paint can being carried up a ladder

14. which of the following codons code for threonine? a. ucg b. ugu c. cga d. aca

There are multiple lines of evidence that provide support for common ancestry and evolution. write 3-4 paragraphs describing at least three of them in detail. provide at least one example for each line of evidence.

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.