Which of the following is a correct IUPAC name?
A) 1-methylpropanal
B) 2-ethylpropanal
C) 2,2-dimethylpropanal
D) none of these
C
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The amount of heat transported by water vapor in the atmosphere is greater than the amount of heat transported by ocean currents
Indicate whether the statement is true or false
What was an unintended side-effect of the construction of the Aswan High Dam in Egypt in the 1970s?
A) Egypt and its southern neighbor, Sudan, fought a war over control of the area. B) The level of the Mediterranean Sea fell several feet, which hurt several port cities. C) It disrupted international trade in East Africa. D) The Sahara Desert became even drier, due to its impact on the water table. E) It led to the spread of a parasitic disease among the population, schistosomiasis.
The geography of American settlement is changing mostly due to economic factors. What are four prominent patterns in this shifting settlement?
According to Ethnologue, a language is considered to be ________ if the only fluent people are older than ________ age. A language is considered ________ if it ceases to be used by people in daily activities
A) dying, 50 year of, endangered B) dying, child-rearing, extinct C) extinct, 50 year of, extinct D) extinct, child-rearing, endangered E) endangered, 50 year of, dying