The part of a body of water where light does not penetrate is the
A. pelagic division.
B. limnetic zone.
C. benthic division.
D. profundal zone.
E. littoral zone.
Answer: D
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A phylogenetic species comprises ____
a. populations that share a recent evolutionary history b. individuals that share a recent evolutionary history c. interbreeding populations that are reproductively isolated d. individuals that share measurable traits that distinguish them e. one large gene pool subdivided into local populations
Acquired immune deficiency syndrome (AIDS) is characterized by ____
a. a primary immune deficiency b. infection with the human immunodeficiency virus (HIV) c. successful worldwide eradication due to vaccination d. a high cure rate e. small, local affected populations
Controversy surrounds the use of zinc-containing nasal sprays as a cold remedy, since they have been associated with anosmia (loss of smell). If true, this is likely due to the sprays damaging which tissue?
A. Neuroglial system B. Central nervous system C. Peripheral nervous system D. Osmic nerve
A finch species living in the Galapagos Islands feeds on small insects found in flower buds. Its bill is most likely
A. small and narrow. B. broad and powerful. C. mid-sized and very long. D. broad and sharp.