When a person sees a doctor about a respiratory illness, the doctor will want to determine if the sickness is in the upper respiratory tract or the lower respiratory tract. The starting point for the lower respiratory system is the trachea. Which structures are part of the upper respiratory system? Select three options.

Analyze the central conflict and its in a story to discover the theme. o resolution o protagonist antagonist character

In which of the following relationships is one organism always benefited while the other organism is always harmed

The image shows the evolution of a species of fish. a few fish from a population developed different social behaviors and evolved into different species. two fish according to the image, the fish underwent . the new species of fish had mating seasons that were different from that of the original fish. because of the differences in mating seasons, the fish underwent reproductive isolation. this mode of isolation would be .