The degree to which detrital particles have had their sharp edges and corners smoothed off byabrasion:a
varve d. sorting
b. cross-bedding e. rounding
c. drift
E
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Which of the following is the most abundant greenhouse gas in the Earth's atmosphere?
A. water vapour B. nitrous oxide C. carbon dioxide D. methane
The precipitation of calcium carbonate around shell fragments can form ____________ because they resemble fish
eggs. Fill in the blank(s) with the appropriate word(s).
The resonant rocking of water is known as a(n) ____________. Fill in the blank(s) with the appropriate word(s)
The ________ is based upon the observation that fossil species succeed one another through layers in a predictable order.
A. principle of faunal succession B. principle of original horizontality C. principle of unconformities D. principle of lateral continuity E. principle of radioactivity