Which of the following subsistence strategies can result in the largest carrying capacity?
a. foraging
b. agriculture
c. horticulture
d. pastoralism
b
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Menarche is:
a. cessation of menstrual cycles. b. the period of lactation that occurs after a baby is born. c. the period of infertility a woman has after giving birth. d. first onset of the menstrual cycle. e. when a woman becomes infertile because of environmental stress.
Which list best describes gene flow?
A) leads to speciation; refers to breeding within a population B) a form of natural selection; generally impossible between species C) often accomplished by emigration; aids in the reproductive isolation of populations D) associated with small populations, sometimes referred to as "founder's effect" E) often works to prevent or reduce reproductive isolation between populations; promotes genetic similarity between populations
If a population is in genetic equilibrium, then p2 + 2pq + q2 = :
A. 0 B. ½ C. 1 D. 10
English national income tripled between 1700 and 1815 and increased 30 times more by 1939. Standards of comfort rose, but prosperity was uneven.
Answer the following statement true (T) or false (F)