Veins
a. are under great pressure.
b. are thicker than arteries.
c. carry blood toward the heart.
d. carry blood away from the heart.
c. carry blood toward the heart.
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Although high caloric input is an obvious cause of obesity, which of the following factors also
contribute(s) to this disease?
a. an inactive lifestyle b. a strong genetic component c. the availability of nonhealthy foods d. both an inactive lifestyle and the availability of nonhealthy foods
The embryonic root tip is indicated by the letter ____
a. A b. B c. C d. D e. E
Which of these symptoms occur with periodontitis?
A) loosening of the teeth B) inflammation of the gums C) loss of bone in the tooth socket D) dental caries or cavities
Average human males are most likely to be attracted to women with a waist to hip ratio of 0.72. Women with this waist to hip ratio are also the most fertile. By being attracted to women with a waist to hip ratio, a male is increasing his chances of having children and thus improve his ________.
A. fitness B. allele frequency C. gene flow D. longevity