The 2014 Ebola virus outbreak in West Africa
A) was quickly contained and caused only a few dozen fatalities.
B) has spread to nearly every nation on the continent and is not contained.
C) was a challenge to control because there is no vaccine and because few regional health facilities exist.
D) is an airborne virus that causes usually fatal damage to the respiratory system.
C
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Choose the option that correctly matches all rock types with their source environments
A) conglomerate: lake bottoms; limestone: sea floor; evaporites: stream deltas B) conglomerate: river bottoms; limestone: lake bottoms; mudstone: lake bottoms C) limestone: river bottoms; conglomerate: sea floor; evaporites: ocean beaches D) limestone: sea floor; evaporites: lake shores; conglomerates: stream deltas
Places on Earth that have similar climates often support plants and animals with similar physical and physiological traits. The best explanation of this phenomenon is ________
A) convergent evolution B) migration of species C) natural selection D) speciation E) divergent evolution
Which of the following describes the types of compounds produced when an anhydride reacts with an alcohol?
A) only a carboxylic acid B) only an ester C) a carboxylic acid and an ester D) None of these, anhydrides do not react with alcohols.
Which of the following occurred first?
A) The Sun B) The Milky Way galaxy C) The big bang D) Earth E) A nebula