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Physical Systems
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Grade 5
5.38 Physical Systems
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A long drought changes grassland into bare, dusty ground in many places. Which statement best explains this change?
A
Drought makes the land move on tectonic plates faster.
B
Less rain means fewer plants, so soil is left exposed to wind and erosion.
C
Dust forms only when rivers flood.
D
Grasslands always turn into glaciers after drought.
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