________ is the loss of more than 10% of soil productivity in arid areas due to such factors as erosion, soil compaction, overgrazing, and forest removal
A) Alkalinization
B) Climatization
C) Desertification
D) Salinization
E) Stratification
C
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If the recurrence interval of an event is 50 years, recurring events ____.?
a. ?will occur exactly every 50 years b. ?will never occur within a one year time period c. ?can occur anytime, but are likely to occur within 50 years d. ?will never occur if there has not been an event for 50 years e. ?will only occur once during any given individual's lifetime
When an aldohexose such as glucose adopts the pyranose structure which atoms are connected by an oxygen atom?
A) C-1 and C-5 B) C-1 and C-6 C) C-2 and C-5 D) C-2 and C-6
________ deposits are found in streams where running water has mechanically concentrated heavy sediment such as gold.
A. Placer B. Pebble C. Lag D. Granular E. Agglomerated
Almost all of the world's oceanic coastlines show evidence of ________ during the past 15,000 years
A) submergence B) emergence C) long-term stability D) isostasy E) heavy oil pollution