Some studies suggest that, as global warming progresses, tropical lowland trees may be limited in their
ability to move northward because of ____.
a. predicted desertification of temperate areas
b. temperatures in the north still being too low
c. flooding of coastal areas
d. extreme weather events like hurricanes and blizzards
e. development and habitat loss
A
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Amoebas move by
A. cilia. B. gliding mechanisms. C. flagella. D. pseudopods. E. All the choices are correct.
A harmless moth that resembles a poisonous wasp is an example of:
A) Batesian mimicry. B) commensalism. C) mutualism. D) Müllerian mimicry.
The anatomical structure identified with the letter
“H” in the figure above is the a. myocardium. b. pulmonary veins. c. inferior vena cava. d. right atrium. e. heart apex.
Kin selection is defined as:
a. selection for a behavior that raises an individual's own chances of survival or reproduction, as well as those of a related individual. b. selection for a behavior that lowers an individual's own chances of survival or reproduction, but raises those of a relative. c. selection for a behavior that lowers an individual's own chances of survival or reproduction, but raises those of another individual who may be reciprocally altruistic. d. selection that operates not just on one individual, but on all of its relatives as well. e. None of the above is correct.