The parts of the respiratory tract are listed below, but they are not in order. Rewrite them in the order in which air goes through the body. a. bronchi
b. mouth and nose
c. air sacs (alveoli)
d. trachea
e. bronchioles​

Which of these is not a function of some membrane proteins ? a. allowing polar molecules to enter the cell b. recognizing other types of cells c. receiving messeges from other cells b. carrying messages to oher cells

In terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants are most similar to a ) moss sporophyteb) moss gametophyte bearing both male and female gametangiac) fern sporophyted) fern gametophyte bearing only antheridia

How can an organ, such as the lungs, work for multiple body systems?