Which of the following is not considered a function of the respiratory system?
a. regulation of acid-base balance
b. production of sound
c. filtering inspired air
d. transport of oxygen and carbon dioxide to tissue cells
e. intake of oxygen and elimination of carbon dioxide

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above

the answer is c.mitochondria. glad to .