Which of the following materials probably has the highest porosity?
A. poorly sorted sediment
B. dry, uncompacted clay particles
C. granite with few fractures but very large crystals
D. a limestone that has a few percent open cavities
Answer: B
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“Factor 4” and “Factor 10” advocates are in favor of what concept?
a) Sustainability through off-grid living b) Community land trust models c) Internalizing environmental costs d) Dematerialization
How is the daily maximum temperature affected by the presence of clouds?
A) cooler B) warmer C) no conclusive effect D) warmer during day, cooler at night
The exposed near-vertical slope separating undisturbed ground from slumped material is the:
a. crown b. main scarp c. head d. transverse crack
According to the Ptolemaic (Greek) system, the planets have circular orbits
Indicate whether the statement is true or false