Vertebrate lungs probably evolved from the digestive tracts of fishes. True or False?
Correct Answer:
Verified
Q57: Why do people who have experienced carbon
Q58: Why do smokers cough?
A)Nicotine blocks chemoreceptors in
Q59: The respiratory center is made of:
A)a cluster
Q60: The receptors in the respiratory center are
Q61: The respiratory system is regulated to maintain
Q63: Frogs use their skin as a respiratory
Q64: Gills are found in some species of
Q65: The large body of a sea jelly
Q66: Fish gills consist of a series of:
A)parabronchi.
B)opercula.
C)spiracles.
D)interconnected
Q67: What features are common to all respiratory
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