Communities evolve to have greater biomass and species richness in a process called
A. succession.
B. adaptive modifications.
C. competitive exclusion.
D. sympatric interactions.
E. symbiotic relationships.
Answer: A
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The total number of viable microorganisms remains constant in stationary phase because
A. either there is a balance between cell division and cell death or there is a cessation of cell division even though the cells may remain metabolically active. B. there is a balance between cell division and cell death. C. there is a cessation of cell division even though the cells may remain metabolically active. D. None of the choices are correct.
The process of regional economic growth through cumulative causation leads to
A) an expansion of taxes the regional government can collect. B) a drop in the amount of skilled labor in the region. C) corresponding rapid growth in distant areas with economic difficulties. D) the increased formation of forward linkages and the eventual ending of backward linkages.
Which of the following components was NOT
a significant part of the earth's early atmosphere?
a. carbon dioxide b. water vapor c. nitrogen gas d. oxygen gas e. hydrogen gas
Which of the following is not a problem
caused by Canada geese? a. Their feces can cloud lakes. b. Their feces contain harmful bacteria. c. They can destroy lawns. d. They can be dangerous to air traffic. e. All of these