By using satellite images, maps, etc．,By studying speci-找考题网

单项选择题

A．By using satellite images, maps, etc.
B．By studying specific farming methods.
C．By studying the variation of human population.
D．By analyzing the quality of crops.

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单项选择题

A．To estimate the extreme weather.B．To develop the satellite technology.C．To improve agricultural output.D．To learn how to change information to maps more efficiently.

A．To estimate the extreme weather.
B．To develop the satellite technology.
C．To improve agricultural output.
D．To learn how to change information to maps more efficiently.

单项选择题

A．Soil.B．Human population.C．Forests.D．Water Supplies.

A．Soil.
B．Human population.
C．Forests.
D．Water Supplies.

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