Which country in Africa has the most productive economy on that continent?
A) Nigeria
B) Sudan
C) South Africa
D) Ghana
E) Kenya
C
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Scandinavian languages such as Norwegian and Swedish all derive from which Indo-European language branch?
A) Indo-Iranian B) Balto-Slavic C) Romance D) Germanic E) Armenian
Of the following: various sulfur gases, hydrochloric acid, and carbon monoxide, only carbon monoxide is poisonous.
Answer the following statement true (T) or false (F)
Why do many health organizations call for local exceptions to the ban on DDT?
A) A cure for Minamata disease has been found B) DDT was blamed for problems it never actually caused. C) Fish no longer eat the plankton that cause DDT biomagnification D) Outbreaks of malaria have dramatically increased E) The pelican population needs to be reduced
On a weather map, which of the following types of fronts is drawn in blue and represents a region where colder air is replacing warmer air?
A. cold-type occluded front B. warm-type occluded front C. cold front D. warm front