Similarity resulting from common ancestry is known as ________.
A. natural selection
B. homology
C. evolution
D. taxonomy
B. homology
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The lower genitourinary tract is usually free of microorganisms.
Answer the following statement true (T) or false (F)
In Earth's history, what might the cooling of the Earth and the resulting change from a forested to a grassy landscape have made adaptive in humans?
A. grasping fingers B. complex language C. social structure D. bipedalism
What is the relationship between species richness and recovery from natural disturbances?
a. Communities with more diversity do not recover from natural disturbances. b. Communities with more diversity experience more natural disturbances. c. Communities with more diversity recover less rapidly from natural disturbances. d. Communities with more diversity recover more rapidly from natural disturbances. e. There is no correlation between community diversity and recovery from natural disturbances.
Normal biota includes each of the following except ________.
A. viruses B. protozoans C. fungi D. bacteria E. All of the choices are correct.