What are the five stages, in order, of Ester Boserup's model of agricultural systems?
A) (1)Forest-fallow cultivation; (2)Bush-fallow cultivation; (3)Short-fallow cultivation; (4)Annual Cropping; (5)Multicropping
B) (1)Bush-fallow cultivation; (2)Forest-fallow cultivation; (3)Short-fallow cultivation; (4)Annual Cropping; (5)Multicropping
C) (1)Forest-fallow cultivation; (2)Short-fallow cultivation; (3)Bush-fallow cultivation; (4)Multicropping; (5)Annual Cropping
D) (1)Forest-fallow cultivation; (2)Short-fallow cultivation; (3)Bush-fallow cultivation; (4)Annual Cropping; (5)Multicropping
E) (1)Bush-fallow cultivation; (2)Forest-fallow cultivation; (3)Short-fallow cultivation; (4)Multicropping; (5)Annual Cropping
A
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During the last century, sea level
A) dropped 3 to 5 cm (1.18 to 3.15 in.). B) remained fairly constant, though some areas (such at the Atlantic coast) experienced moderate rises. C) rose 30 to 46 cm (11.8 to 18 in.). D) rose 17 to 21 cm (6.7 to 8.3 in.).
The Coriolis force deflects winds to the ____________________ in the Northern Hemisphere and to the ____________________ in the Southern Hemisphere
Fill in the blank with correct word.
All bottom-dwelling marine organisms that live on the seafloor or within seafloor sediments:a
anomalocarid d. chordate b. benthos e. ammonoid c. nekton
The amount of solar heat received equals the amount of solar heat lost in what region?
a. northern polar regions b. mid-latitudes c. tropical regions d. southern polar regions e. equatorial latitudes