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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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.
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