Lichens play a special role in chemical weathering by
A) weakening the hydrogen bond in water, making it more effective at dissolving rocks with high quartz concentrations.
B) slowing the rate of jointing in rocks.
C) acting as a catalyst for the dissolution of minerals that crystallize at the highest temperatures.
D) secreting oxalic acid, which dissolves carbonates particularly well.
D) secreting oxalic acid, which dissolves carbonates particularly well.
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In a(n) ____ bond, elements share electrons
a. ionic b. van der Waals c. electromagnetic d. covalent e. noble
How was the radius of Earth determined? Is Earth a perfect sphere?
What will be an ideal response?
Quebec's many bogs, marshes, and lakes where created by what process?
A) Hydrostatic flow B) Glaciation C) Appropriation D) Hydrostatic pressure
As a whole, over the past 70 million years there has been ________
A) a global cooling B) a global warming C) a global warming and then a global cooling D) no significant climate changes E) no way to determine if there have been climate changes