A researcher compares the species diversity of two different islands located equal distances from the mainland. One island is much smaller than the other
She finds that the S value for
the smaller island is ___________ the S value for the larger island. When she examines the
extinction rates for both islands, she finds that the extinction rate on the small island is
____________ the extinction rate for the large island.
A. lower than; the same as
B. higher than; the same as
C. the same as; lower than
D. the same as; higher than
E. lower than; higher than
F. F. higher than; lower than
E
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The cell-mediated immune response is a function of ____
a. B cells b. T cells c. plasma cells d. blood cells e. antigen producing cells
Each of the following are associated with replicons except
A) origin of replication. B) terminator sites. C) initiator proteins. D) minichromosome maintenance proteins. E) helicase loaders.
If different populations of the same species become geographically isolated and evolve reproductive isolation over a period of time, then _______________ has occurred.
A. artificial selection B. extinction C. speciation D. adaptation E. classification
What evidence exists that suggests modern agriculture is unsustainable?
A) Fresh water is used for irrigating crops. B) Large amounts of nonrenewable fossil fuels are required. C) Fertilizers and pesticides are inexpensive and easy to obtain. D) More food is produced than can be used.