How does the removal of prairie dogs differ from the removal of any other animal species?
a. Removal of prairie dogs fundamentally changed the community from one with high speciesdiversity to one dominated by mesquite and grasses
b. Removal of prairie dogs allowed for a more diverse community structure to becomeestablished.
c. Removal of all other species had only a temporary effect on other populations.
d. Both a and c above .
d
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The feeding relationships among the species in a community determine the community's _____
A) secondary succession B) ecological niche C) species richness D) species-area curve E) trophic structure
How many possibilities are there for a short nucleic acid sequence of six nucleotides?
A. 24 B. 64 C. 1,296 D. 4,096 E. 64,000,000
Which is true of the cells of a choanoflagellate colony?
a. each cell is genetically unique b. each cell is genetically identical c. each cell has a different chromosome number d. each cell performs the same function as the other cells e. each cell has the ability to switch their sex from male to female and back again
Protostomes develop through
A. polar cleavage. B. protocleavage. C. spiral cleavage. D. radial cleavage. E. axial cleavage.