____________________ involves the impact of saltating sand grains on an object. Fill in the blank(s) with the appropriate word(s)
Abrasion
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The following reaction is used to make the polymer described below. What is the other starting material?
A. HOCH2CH2OH
B. H2O
C. H2C 
CH2
D. HOCH2CH3
E. HOCH2CH2CH2CH2OH
A Cfa climate exists on the southeastern coast of the United States. Which climate type exists on the southwestern coast of the United States?
A) Cfa B) Csa C) Cfb D) BWh E) Dfa
In 2005 the United States Congress mandated that NASA find 90 percent of large Near Earth asteroids (NEAs)-those that have the potential to impact Earth-by the year 2020. This mandate was created in response to recent scientific data indicating large impact events were common in Earth's geologic past and therefore will likely occur again in the future. Many new NEAs have been discovered as a result of NASA's efforts and research is under way to find ways to stop such impact events from occurring.The above paragraph suggests that, unlike other natural hazards, asteroid impacts ________.
A. pose little threat to humans B. are intensively studied by scientists C. may some day be prevented D. are not likely to occur in the near future
________ is the sociological term for discontentment brought on by consumerism and materialism
A) Consumption B) Dysentery C) Influenza D) Systemic materialism E) Affluenza