Which of the following scenarios can lead to the formation of a kame? A: Sediment accumulates in a hole in the ice B: Sediment is carried on top of the glacier C: Sediment collects in subglacial stream channels D: Sediment covers a stagnant block of ice
Which of the following scenarios can lead to the formation of a kame? A: Sediment accumulates in a hole in the ice B: Sediment is carried on top of the glacier C: Sediment collects in subglacial stream channels D: Sediment covers a stagnant block of ice
The "white chalk cliffs of Dover" are mentioned in line 14 of the passage to（） A: show where the plankton sediment first began to build up B: provide an example of a plankton buildup that scientists cannot explain C: provide all example of the buildup of plankton sediment D: indicate the largest single plankton buildup on Earth
The "white chalk cliffs of Dover" are mentioned in line 14 of the passage to（） A: show where the plankton sediment first began to build up B: provide an example of a plankton buildup that scientists cannot explain C: provide all example of the buildup of plankton sediment D: indicate the largest single plankton buildup on Earth
Due to the high sediment concentration and the broken geological structure of Jinghe riverbed, Zhengguoqu Canal was much silted and became out of use in _______ Dynasty.
Due to the high sediment concentration and the broken geological structure of Jinghe riverbed, Zhengguoqu Canal was much silted and became out of use in _______ Dynasty.
Which of the following statement is the appropriate description of cast? A: the hardened resin of tree sap trapped organisms within it, sealing them from the atmosphere B: a mineral-matter filling of a hollow space left by a dissolved shell C: a shell is buried in sediment and then dissolved, leaving the sediment to take the shape of the organism D: a filling of a life form’s pore spaces and cavities with precipitated minerals
Which of the following statement is the appropriate description of cast? A: the hardened resin of tree sap trapped organisms within it, sealing them from the atmosphere B: a mineral-matter filling of a hollow space left by a dissolved shell C: a shell is buried in sediment and then dissolved, leaving the sediment to take the shape of the organism D: a filling of a life form’s pore spaces and cavities with precipitated minerals
Please find the word that is equivalent to the definition.fit for drinking A: sewage B: vegetation C: potable D: drainage E: waterlogged F: sediment G: habitat H: erosion
Please find the word that is equivalent to the definition.fit for drinking A: sewage B: vegetation C: potable D: drainage E: waterlogged F: sediment G: habitat H: erosion
Please find the word that is equivalent to the definition.flooded with water A: sewage B: vegetation C: potable D: drainage E: waterlogged F: sediment G: habitat H: erosion
Please find the word that is equivalent to the definition.flooded with water A: sewage B: vegetation C: potable D: drainage E: waterlogged F: sediment G: habitat H: erosion
The greenhouse effect resulted hundreds of million years ago when _________. A: the atmosphere changed dramatically B: oxygen levels on the earth became lower C: the sea levels became lower greatly D: the sediment gave off enormous carbon and methane
The greenhouse effect resulted hundreds of million years ago when _________. A: the atmosphere changed dramatically B: oxygen levels on the earth became lower C: the sea levels became lower greatly D: the sediment gave off enormous carbon and methane
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)