Particles that serve as surfaces on which water vapor may condense are called
a. ?hydrophobic nuclei.
b. ?nacreous nuclei.
c. ?condensation nuclei.
d. ?scud.
e. ?molecules.
ANSWER: c
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Quartz sandstone is changed during metamorphism into
A. quartzite B. schist C. hornfels D. marble
In your explorations in your new job as a marine biologist, you find a new species of algae floating on the surface of a coastal zone body of water. You would most likely classify this species as
a. zooplankton or phytoplankton b. Nekton c. Benthic d. Coral e. a fungus
From a biodiversity perspective, which is the greater concern with regard to siltation and reservoirs in the Colorado River Basin?
A. Downstream silt losses have impaired the coastal delta wetlands B. The lake might become too silted to produce electricity C. Lowered water capacity may impair agricultural production D. Lowered water capacity may result in people moving away
Because of biomagnification, the most toxic organisms in any ecosystem will be the
A) producers. B) primary consumers. C) secondary consumers. D) soils.