Soil material is actually small bits of rocks and composed of ________
A) humus
B) loam
C) silica
D) hydrogen
E) air
Answer: C
Environmental & Atmospheric Sciences
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One gas typically not released during a volcanic eruption is
A. carbon dioxide B. oxygen C. water vapor D. hydrogen sulfide E. sulfur dioxide
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Examples of valuable nonmetallic minerals extracted by mining are ________
A) gold, platinum, copper B) diamonds, gravel, phosphate C) nitrogen, hydrogen, neon D) radon, radium, sodium E) lead, cadmium, mercury
Environmental & Atmospheric Sciences
What do most deep water consumers depend on for survival?
a. The productivity of the water column above b. Chemosynthetic productivity c. The deep scattering layer of nutrients d. Rift communities
Environmental & Atmospheric Sciences
Which of the following is NOT closely related to ENSO?
A) Europe B) South Pacific Ocean conditions C) La Niña D) The Southern Oscillation E) El Niño
Environmental & Atmospheric Sciences