A hypothesis is a
A) conclusion based on results of an investigation.
B) proposed explanation developed before formal investigation.
C) question developed that leads to an observation.
D) strategy for solving a scientific problem.
B) proposed explanation developed before formal investigation.
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Who led Burma (Myanmar) from 1988-2011?
A) a repressive military regime B) a left-wing labor party C) an Islamic theocracy D) a centrist democratic party E) a wealthy monarchy
The prime meridian, from which longitude is calculated, is
A. in the Pacific Ocean B. in Washington, DC C. near London, United Kingdom D. in Tokyo, Japan
Which of the following is NOT a type or agent of physical weathering?
a. frost wedging b. fire c. plant roots d. salt crystal growth e. spheroidal weathering
Cis-trans isomers exist for which of the following?
A) 1,2-dimethylcyclopentene B) 2,3-dimethylcyclopentene C) 3,5-dimethylcyclopentene D) All of them exist.