The last two remaining females in this population disperse to join a different population that is
50 km away, where they breed with new males. If these females produce only sterile offspring
as the result of mating with males in the new population, what type of reproductive isolation
does this represent?
a. post-mating barrier
b. pre-mating barrier
c. temporal barrier
d. behavioral barrier
A
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A keystone species
a. has a disproportionately large effect on a community relative to its abundance b. controls the prey species. c. may increase or decrease the number of prey species in a community. d. has a disproportionately large effect on a community relative to its abundance, and may increase or decrease the number of prey species in a community. e. has a disproportionately large effect on a community relative to its abundance, controls the prey species, and may increase or decrease the number of prey species in a community.
Which type of vessel offers the most resistance to blood flow?
a. artery b. arteriole c. capillary d. venule e. vein
An ecological niche is typically ________ dimension/s
A) one B) two C) three D) an unspecified number of
Golden Rice was originally developed to provide a source of ________ to people for whom rice is the principal food
Fill in the blank(s) with correct word