Sinkholes only form very gradually
a. True
b. False
Indicate whether the statement is true or false
False
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Glacio-eustatic factors refer to
A) changes in the total amount of water on Earth. B) a steady-state equilibrium in the water system. C) changes in sea level related to the increase or decrease in quantities of ice. D) changes in sea level related to the melting of icebergs.
Why are the Ural Mountains important to Russia's manufacturing centers?
A) They are an important source of water needed for manufacturing. B) They are near major cities where the primary markets for Russia's goods are located. C) They have the largest deposits of industrial minerals in Russia. D) They have many fast-moving rivers, which provide hydropower for Russia's factories. E) They are the key source of uranium that fuels the nuclear power plants that power Russia's factories.
The most common group of silicates is ________
A) feldspar B) mica C) quartz D) granite
What is the youngest event represented in this block diagram?
A. retreat of the seas B. deposition of the top layer C. erosion of a canyon by a river D. formation of the lowest layer