Sedimentary rocks are formed from igneous rocks beginning with the process of _____.
a. lithification
b. weathering
c. erosion
d. transportation
e. crystallization
b. weathering
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The use of hydrogen gas would eliminate most of the air pollution problems we have today because:
a. When it burns it combines with carbon dioxide and removes it from the air. b. When it burns it combines with water to produce heavy rainwater. c. When it burns it combines with oxygen gas in the air to produce water vapor. d. When it burns it combines with carbon to produce methane gas. e. More than one of the answers is correct.
The intensity and location of the monsoon activity depend on the position of the intertropical convergence zone (ITCZ). Monsoons follow ITCZ ____ in the Northern Hemisphere's winter and ____ in its summer.?
A) ?east; west B) ?north; south C) ?south; north D) ?west; east
The key special chemical used by chemosynthetic communities at hot vents is ________.
A. silicate B. nitrate C. phosphate D. methane E. hydrogen sulfide
You are studying an outcrop where the base layer is limestone and the layer directly on top of that is sandstone. Near the base of the sandstone are small, weathered pieces of limestone entirely contained within the sandstone
Explain how these pieces of limestone came to be contained within the sandstone. What will be an ideal response?