Which biome is characterized by permafrost?  

Trichomonas vaginalis is a protozoan that feeds on white blood cells and bacteria living on the cells lining the female human vagina, thereby creating a common sexually transmitted disease often known as “trich.” The feeding mechanism of this protozoan makes it a ________.  

What best describe(s) the dependencies of most flowering plants?  

What hormone promotes cell division?  

What hormone promotes cell elongation in stems?  

What is the major component of most plant cell walls?  

The greenhouse effect causes an increase in global temperatures. This increase is due primarily to ________.  

Which mode of nutrition characteristic distinguishes animals from other eukaryotes?  

  The Baroque period was the first in which instrumental music was comparable in importance to vocal music.  

  Beethoven served as a bridge between the Classical style and the Romantic era.