What is the general term for a gap in the geologic rock record that represents a period of non-deposition, erosion, or both?
A)nonconformity
B)disconformity
C)angular unconformity
D)anticonformity
E)unconformity
E
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Shifting cultivation is most commonly practiced in
A) core countries. B) tropical and subtropical regions. C) southern Africa and Australia. D) Siberia.
The common definition of pest
A) is based on the negative impacts of an organism on human activities. B) varies depending upon whether the organism is an herbivore or carnivore. C) varies widely in the world depending upon the particular culture. D) is limited to organisms that are plants.
Changes in the Earth's elliptical orbit around the Sun is called
A) eccentricity. B) obliquity. C) precession. D) inclination.
Oysters, sea stars, and lobsters would be considered what type of organism?
A. phytoplankton B. zooplankton C. nekton D. benthos E. decomposers