Argentine fire ants entered the United States in

the
a. 1920s.
b. 1930s.
c. 1940s.
d. 1950s.
e. 1960s.


B

Biology & Microbiology

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Prosimians are:

A. small, primitive primates B. professional animal trainers C. primitive australopithecines D. the most advanced primates E. none of the choices provided

Biology & Microbiology

After one minute without oxygen, brain cells begin to die. After three minutes, this damage is likely to cause severe

neurological deficits. The dependence of brain cells on oxygen for survival indicates that these cells are ____.

a. strict aerobes b. strict anaerobes c. facultative aerobes d. facultative anaerobes e. transitional aerobes

Biology & Microbiology

In ecosystems, primary consumers are:

a. herbivores b. carnivores c. scavengers d. decomposers e. detritivores

Biology & Microbiology

Which of the following elements is NOT responsible for a significant portion of the mass of living

organisms? a. O b. S c. N d. H e. C

Biology & Microbiology