Which cells of the immune system are the first to attack invading viruses or bacteria?
A) B cells
B) dendritic cells
C) macrophages
D) T cells
B
Environmental & Atmospheric Sciences
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Which plate boundaries are most likely to form mountains?
A. transform B. divergent C. convergent
Environmental & Atmospheric Sciences
Using the data in this table, determine the age of the dike.
A) 500
B) 1,000
C) 40,000,000
D) 500,000,000
E) 1,000,000,000
Environmental & Atmospheric Sciences
On what basis was the name aromatic originally given to compounds?
A) They had strong odors. B) Their first application was in aromatherapy. C) Their odors were considered to be pleasant. D) Their odors were considered to be unpleasant.
Environmental & Atmospheric Sciences
Velocity
A) is the same as speed. B) is unrelated to acceleration. C) is unrelated to momentum. D) has direction but no magnitude. E) none of the above
Environmental & Atmospheric Sciences