Which of the following about food chains and food webs is true?
A) Food chains consist of many interrelated food webs.
B) Food chains are interconnected to form food webs.
C) Food webs consist of either consumers or producers.
D) Food webs usually consists of 8 to 10 trophic levels.
B
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Which of the following is true of urban retailing?
A) Historically, urban residents bought food and other daily necessities at small neighborhood shops in the midst of housing areas. B) Historically, grocery stores have always been outside the CBD. C) Historically, all the large clothing stores preferred to set up shop in large suburban malls. D) Historically, gangs made stores in the CBD pay "taxes" (protection money) to them. E) Because of lower taxes, historically, large retail businesses preferred to locate in tall buildings.
Which biological process may have resulted in the development of eukaryotic organisms from primitive prokaryotic
organisms? a. endosymbiosis b. abiogenesis c. stratification d. progradation e. outgassing
Maritime air masses are dry in winter and humid in summer
Indicate whether the statement is true or false
Milankovitch cycles involve the periodic ________ and could be responsible for ________ weather changes.
A. Seasons; daily B. Convection currents in the lower atmosphere; drastic C. Tidal cycles from month to month; seasonal D. Wobbling of the earth's axis and orbital shifts; cyclic E. Summer/winter seasonality on the Earth; gradual