In recent decades, what agricultural sector has expanded the most in the developing world?
A) domestic foodstuffs sector
B) export sector
C) jute
D) manioc
E) import sector
B
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Cells that convert solar energy directly into electricity are called
A. electrosolar chips. B. photovoltaic cells. C. helioelectric units. D. photoelectric cells. E. solarelectric cells.
Despite a massive reduction in the poverty rate, upwards of how many Chinese still live on less than $1.25 a day?
A) 200,000 B) 200 million C) 2 billion D) 2 million E) 20 million
The assimilation of radiation by molecules of matter is
A) refraction. B) absorption. C) reflection. D) transmission.
The release of latent heat from water molecules is called ________
A) vapor pressure B) evaporative cooling C) specific humidity D) condensation E) sublimation pressure