A rotational slide is most likely to occur in ____
a. ?rounded sand grains on a gentle slope
b. ?large boulders with smooth sides
c. ?new snow lying above packed snow
d. ?homogenous, cohesive materials
e. ?slopes with high water pressure
ANSWER: d
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A) Pathogenic soil bacteria and fungi that destroy plant roots B) Common in soils that lack a functional humus C) Symbiotic fungi that increase soil nutrient uptake in plant roots D) Important soil millipedes that increase aeration of topsoil
________ is a metamorphic rock with distinct light and dark layers that formed at high temperatures and pressures.
A. Gneiss B. Slate C. Phyllite D. Schist E. Greenstone
Fossils of ancient polar plants are currently found near the equator because the ________
A) entire earth had polar conditions at the time the plants were living B) plants lived near the poles, but landmasses have drifted to current locations C) plants probably were tolerant of both tropical and polar conditions D) plants were distributed to current locations by ancient glacial ice sheets E) poles were at the equator at times in the geologic past
Which of the following locations is associated with a zone of upwelling for the Antarctic Bottom Waters (AABW)?
A. A B. B C. C D. D