Which factor has dramatically decreased infant mortality in human populations?
A) a shift from an agricultural to an industrial economy
B) the use of pesticides to reduce mosquito populations
C) the choice made by educated women to have fewer children
D) an increase in poverty in developed countries
B
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The level of the oceans is rising due to:
a. ozone depletion. b. global warming. c. lost species biodiversity. d. increased precipitation. e. acid rain.
Cytokinesis in plant cells occurs via the formation of a(n):
a. aster. b. mitotic spindle. c. Golgi complex. d. cell wall. e. cell plate.
Which plants utilize a specialized carbon fixation enzyme and a unique cell type/organization to reduce the problems of photorespiration?
A. CAM B. arctic C. C3 D. C4 E. desert
The P/O ratio for passing electrons through complexes I, III and IV is ________.
A) 1 B) 1.5 C) 2 D) 2.5 E) 3