Which of the following terms is most closely associated with ultimate causes of behavior?
a. physiological changes
b. genetic causes
c. evolutionary pressures
d. developmental processes
e. climatic pressures
C
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The movement of phloem sap is best described from the ____ to the ____
a. shoot system; root system b. sinks; sources c. root system; shoot system d. sources; sinks e. shoot system; sinks
Human society in its current form is unsustainable because
A. diverting agricultural yield for feeding livestock supplies enough protein to fulfill a community's dietary needs. B. recycling has eliminated the need for the mining of some mineral resources. C. renewable energy sources are consuming land and resources more quickly than they can be replenished. D. freshwater is being effectively preserved through conservation. E. important natural resources are being consumed more quickly than they can be replenished.
Algal blooms deplete the water of
a. oxygen. b. carbon dioxide. c. nitrogen. d. phosphorus. e. calcium.
Frailty in the elderly has been correlated with
a. an increase in abundance of Firmicutes. b. a decrease in abundance of Bacteroides. c. a decrease in abundance of Firmicutes. d. none of the above.