In Figure 22-2, representatives of hominoids include all of the following except:
a. 1 thru 3.
b. 1 thru 5.
c. 1 thru 6.
d. 1 thru 7.
e. All listed groups are hominoids.
A
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High doses of AAS have been found to
a. increase TSH levels. b. decrease gonadotrophins from the hypothalamus. c. increase natural testosterone. d. decrease thyroxine levels. e. have no effect on TSH levels.
Because of genetic differences in people's responses to medications, there are over 100 different types of ____
a. antibiotics b. muscle relaxers c. tranquilizers d. blood pressure medications e. stimulants
Which of the following is not an example of symbiotic nitrogen fixation?
A. Frankia with woody shrubs B. Anabaenea with a water fern C. Rhizobium with leguminous plants D. Azotobacter with certain photosynthetic protists
The leading cause of extinction by human activities worldwide is
A) habitat fragmentation. B) predation. C) pollution. D) invasive species. E) overexploitation.