By considering temperature and worldwide sunshine distribution, the ancient Greeks categorized the world into ____ climatic regions
a. ?3
b. ?4
c. ?5
d. ?6
e. ?7
ANSWER: a
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Swahili is a creole language used in which of the following subregions of Sub-Saharan Africa?
A. Southern Africa. B. Namibia. C. The Niger River Valley. D. Eastern Africa.
Which of the following are examples of regulating ecosystem services?
A) Soil formation and nutrient cycles B) Food, water, and fiber C) Pollination and chlorophyll D) Climate, water flow, and disease control E) Aesthetic beauty and recreation
Which of the following is true of adaptive immunity when an invader is encountered for the second time?
A) The first and second responses are both slow. B) The first response is faster than the second. C) The second response is faster than the first. D) There is no need for a second response.
All major geyser basins are similar in that they are covered with ________
A) a salt glaze B) mineral deposits C) tufa layers D) a thick sulfur layer E) a gravel layer