What is transmutation?
A. changing one element into another by adding or removing neutrons from the nucleus
B. changing one element into another by adding or removing protons from the nucleus
C. a process that emits radiation
D. alteration in DNA due to radioactivity
E. changing one element into another by adding or removing electrons from the nucleus
Answer: B
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Converting plant sugars into simple sugars creates which biofuel?
A. ethanol B. methane C. propane D. ethane E. butane
An important natural source of which of the following chemicals comes from volcanoes?
A. ozone B. benzene C. carbon monoxide D. sulphur dioxide
The consequences of the Kyoto Protocol are pictured in the accompanying figure. Which category or group of countries experienced substantial emissions reductions because of improved energy technologies?
A) United States B) China C) developing countries D) developed countries E) poorest countries
What physical boundary separates the United States from Mexico along much of its border?
A) The Pecos River B) The Red River C) The Colorado River D) The Rio Grande