With what historical period did the most active period of canal-building coincide?
A) the end of the Bronze Age
B) the Civil War Era
C) just before World War I
D) the middle of the Renaissance
E) the beginning of the Industrial Revolution
E
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What elements of study do physical and human geography share?
A) They are concerned with patterns in space and why and where things occur. B) They both are trying to solve human's influence on the environment. C) It is common for professors to teach both areas. D) They are both concerned with the migration of people from one area to another. E) They both focus on the cultural aspects of geography.
Which of the following is true of the atomic weight of an element?
A) It is the weight of heaviest isotope. B) It is the weight lightest isotope. C) It is the weight of the most abundant isotope. D) It is a weighted average obtained from the weights and abundances of the isotopes.
What is the most important aspect of future oil supplies?
A) when the supplies will be exhausted B) how much remains C) when oil production will peak D) how clean newly found oil reserves will be
Which of the following side chains are hydrophilic?
A) acidic B) basic C) polar but neutral D) all of these