What properties that the zone of aeration have?
a. All of the open spaces in rock and sediment are completely water filled
b. Includes capillary fringe and belt of soil moisture
c. Area above water table
d. Includes mostly air
e. Both b, c, and d
Answer: e. Both b, c, and d
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A sharp peak in sediment yield in the Piedmont region around 1960 corresponded with a period of
A) conversion of land to agriculture B) extensive off-road vehicle use C) heavy rainfall D) rapid urbanization
Burning ethanol derived from sugarcane produces at least ________ less greenhouse gases than burning an equivalent amount of gasoline
A) 33-66% B) 5-15% C) 16-32% D) 97-99% E) 87-96%
Each of the major continents at the beginning of the Paleozoic can be divided into two major
components:a. a trough and a range b. a craton and a mobile belt c. an immobile belt and a rift margin d. a craton and an ocean basin e. none of the above
The ________ province extends from the spring high tide shoreline to a depth of 200 meters
A) bathyal B) littoral C) sublittoral D) subneritic E) supralittoral