Which type of energy accounts for 31.4% of the world’s energy use, the most of any source?
a) Nuclear energy
b) Coal
c) Oil
d) Hydropower
c) Oil
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The core-periphery model can be applied to which countries?
A. United States B. Germany C. France D. Japan E. all of these
Although oceanographers may specialize in one particular area of study, the nature of the science is interdisciplinary,
meaning that marine scientists must have a general knowledge of all areas of oceanography in order to study the system as a whole. a. True b. False
When a mineral fractures along a cleavage plane, what does this suggest about the crystal structure of the mineral?
A) The crystal structure contains planes along which chemical bonding is much weaker than other directions. B) The crystal contains warped planes called twin planes that weaken the crystal structure and allow it fracture along a planar surface, causing cleavage. C) The atoms are arranged in a simple orderly arrangement with uniform bonding. D) The crystal grows only planar faces that become weak zones that form cleavage.
Which of the following is found in glycolipids but not in other complex lipids?
A) a carbohydrate B) a fatty acid C) sphingosine D) None, all these are found in both types of lipids.