The effect of the river in lengthening the agricultural zones in the diagram on the right is due to
A) the availability of water for irrigation.
B) elevation changes.
C) fishing.
D) defense of the city.
E) the ease of transport by water to the market.
Question 2
The invention and rapid diffusion of more productive agricultural techniques is called ________, that involves introduction of ________ and the expanded use of ________.
A) mass production, hydroponics, herbicides
B) the Agricultural Revolution, new tractors, advanced watering
C) mass production, higher-yield seeds, fertilizers
D) the Green Revolution, higher-yield seeds, fertilizers
E) the Green Revolution, new tractors, inter-cropping
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