Which term best indicates changes such as the origin of new species?
A)allopatric speciation
B)mutation
C)microevolution
D)macroevolution
E)genetic drift
D
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Which of the following would lead to an increase in relative humidity?
A) an increase in saturation vapor pressure B) an increase in vapor pressure C) an increase in temperature D) all of the above E) none of the above
How do NK cells and Tc cells kill invading viruses and bacteria?
A) by engulfing and devouring them B) by injecting a chemical toxin C) as a result of crenation D) as a result of lysis
Which of the following best describes the effect of convective flow on the elevation of Earth's major landforms?
A) Convective flow adds more material to the base of the lithosphere, making it downwarp. B) Rotation of convecting mantle material smoothes out wrinkles in the surface. C) Hot rising material upwarps the landscape whereas downward flow causes downwarping. D) Subduction of oceanic plates disrupting the convective flow on the mantle, resulting in hot spots burning through the crust.
Which of the following can be related to deaths during the January 1998 ice storm in Canada?
A. house fires B. carbon monoxide poisoning C. hypothermia D. falling ice E. All the options are correct.