The primary cause of these disasters is just that the river picked up a large amount of silt when flowing through the Loess Plateau in its middle __________________.
The primary cause of these disasters is just that the river picked up a large amount of silt when flowing through the Loess Plateau in its middle __________________.
After being dug out and removed the silt on it, Fuling would be placed until it ( ). A: air-dried B: kiln-dried C: Infrared dried D: fahan
After being dug out and removed the silt on it, Fuling would be placed until it ( ). A: air-dried B: kiln-dried C: Infrared dried D: fahan
The river flows quietly in its upper reaches, however, in its middle reaches it splits the Loess ___________in half. Therefore, it carries a large amount of silt into the lower reaches.
The river flows quietly in its upper reaches, however, in its middle reaches it splits the Loess ___________in half. Therefore, it carries a large amount of silt into the lower reaches.
Which of the following best describes the formation of “desert pavement”? A: alluvial fans are eroded to form inselbergs with flat, angular rocky surfaces B: runoff and deflation carry off the fine particles of silt and clay, leaving coarser particles behind C: groundwater in an alluvial fan evaporates, leaving behind a surface layer of hard-baked mud and boulders D: deflation removes the coarse fragments leaving behind a layer of fine sediment (loess and mud)
Which of the following best describes the formation of “desert pavement”? A: alluvial fans are eroded to form inselbergs with flat, angular rocky surfaces B: runoff and deflation carry off the fine particles of silt and clay, leaving coarser particles behind C: groundwater in an alluvial fan evaporates, leaving behind a surface layer of hard-baked mud and boulders D: deflation removes the coarse fragments leaving behind a layer of fine sediment (loess and mud)