All of the following characteristics apply to the organism in Figure 21-2 EXCEPT?
a. marine reptile
b. lived during the Triassic period
c. body form resembled a porpoise
d. large eyes
e. enlarged sharp claws
E
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Riftia tube worms make a unique kind of hemoglobin to
A. to assist in the transport of carbon dioxide. B. transport oxygen. C. transport hydrogen sulfide. D. All of the choices are correct.
The portion of the nervous system that is responsible for increasing heart rate, as well as increasing
movement of the intestines, is the
a. autonomic nervous system. b. sympathetic division. c. parasympathetic division. d. somatic nervous system. e. interaction between the somatic and autonomic nervous system.
The direct effect more commonly occurs than the indirect effect.
a. true b. false
When taken by pregnant women, ________ decreases the chance of neural tube defects in infants
A) folic acid B) vitamin C C) vitamin K D) calcium