Scientists have discovered that the inner core of the earth is solid while the outer core is liquid what is the cost of this observation

Which part of cellular respiration must occur before any of the other steps can occur

Why do we perceive objects as retaining their brightness under different lighting levels?

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.