What is the most common cancer for men aged 20 to 35?

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?

Types of scientific inquiry that biologist engage in that cannot be completely controlled

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.