Wind-blown dust-sized particles of silt and clay can settle out to form thick blankets of sediment called _____ that may cover or bury the existing topography over widespread areas
a. barchans
b. seif
c. deflation hollows
d. loess
e. clay pan
d
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Electrons are positively charged particles in the nucleus of an atom. Indicate whether the statement is true or false
In regions with ________, basic ions are leached from the soil and more acidic materials are left behind.
A. high rainfall B. high temperatures C. permafrost D. low rainfall
Which of the following can undergo keto-enol tautomerism?
A) 2,4-dimethyl-3-pentanone B) 2,2,4,4-tetramethyl-3-pentanone C) both a and b D) neither a nor b
The beach face ________.
A. is found between the summer and the winter berm B. is found between high-tide and low-tide levels C. is the same as the low-tide terrace D. lies under the surf zone E. appears between an offshore bar and a low-tide terrace