Of the following, the social trend that would cause the fastest population increase is ________
A) declining fecundity
B) lower nutritional values
C) more older men getting married
D) decreasing age of first pregnancy
D
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Cholesterol dissolved in the blood is carried by
a. albumin. b. high-density lipoproteins. c. low-density lipoproteins. d. triglycerides. e. both high-density and low-density lipoproteins.
Refer to Figure 31-5. Which structure is involved in respiration?
A. 5 B. 6 C. 7 D. 8
Which one of the following is TRUE regarding mature human gametes?
A) produced by the process of mitosis B) contain the haploid number of chromosomes C) produced in the testes and oviducts D) are also known as primary spermatocytes and primary oocytes E) contain 46 chromosomes
Which term refers to the initial branches of the trachea that lead into each lung?
a. bronchioles b. alveoli c. pleura d. bronchi