What is the driving mechanism for plate tectonics? What will be an ideal response?
Thermal convection cells
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By 2009, the five countries that had met their Millennium Development Goals were ____________________, ____________________, ____________________, ____________________, and ____________________
Fill in the blanks with correct word
Why is calcite not common in the igneous rock exposed at Yosemite National park?
A) Calcite isn't found anywhere in California. B) Calcite is too strong to melt in magma, later becoming igneous rocks. C) Magma is formed beneath the earth's surface which primarily contains heavier minerals like silicates, not calcite. D) Calcite can only be in sedimentary rocks.
The cold feeling that you experience after leaving a swimming pool on a hot, dry, summer day
represents heat transport by: a. conduction. b. convection. c. radiation. d. latent heat.
Natural gas is primarily composed of ________
A) methane B) oxygen C) carbon dioxide D) nitrogen E) hydrogen