Is the volume of voids or open space in a rock or unconsolidated material.
A) Space yield
B) Saturation index
C) Permeability
D) Porosity
Ans: D) Porosity
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Which of the following is NOT included in the concept of biodiversity?
A. diversity of climate B. diversity of ecosystems C. diversity of genes D. diversity of species
It appears that, as the number of sunspots increases, the sun's total energy output:a
increases slightly b. decreases slightly c. begins to alternately increase and decrease above average values d. does not change
The new IRIS and NCEA programs of the EPA
A) work globally with U.N. agencies to detect pathogens in imported foods. B) write policy for the U.S. Congress to shape legislation on toxic chemicals. C) publish and create databases on chemicals released into the environment that may pose health risks. D) have produced an index for the risk of suffering from asthma in U.S. cities.
A model is a useful simplification of a more complex reality
a. True b. False Indicate whether the statement is true or false