Which of the following chemicals causes much of the damage associated with fetal alcohol syndrome?
A) acetaldehyde
B) acetic acid
C) acetone
D) ethanol
A
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The Three Gorges Dam produces about ______ percent of China’s energy’s output
A. 10 B. 25 C. 20 D. 12
Why is carbon dioxide able to be stored more effectively in ocean water vs. fresh water?
A) The pH of the ocean is pretty high and so the carbon dioxide is trapped in a neutralization reaction. B) The oceans are large and so you can dissolve more CO2 in them. C) Gases are more soluble in cold water than warm water and the oceans are colder than fresh water lakes so you can dissolve more CO2 in them. D) The pH of the ocean is very low and so the carbon dioxide is trapped as an acid because like dissolves like. E) none of the above
With movement of Gondwana over the South Pole, extensive glaciation occurred during the
a. Carboniferous. d. Silurian. b. Devonian. e. none of the above c. Permian
An artesian aquifer occurs where ________
A) a well is dug through layers of sand and gravel into the water table B) a water?bearing porous layer of rock, sand, or gravel has accumulated groundwater over a long period of time C) several aquifers have merged D) a water?bearing layer is trapped between two layers that are less permeable E) granite is overlain by a sandy substrate, allowing percolation into the aquifer