What is the one factor that dictates the presence of prairie and the relative absence of trees?


Answer: Critical degree of evaporation

Environmental & Atmospheric Sciences

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Approximately how long ago did the Chesapeake Bay impact occur?

a. 5 million years b. 15 million years c. 35 million years d. 45 million years e. 70 million years

Environmental & Atmospheric Sciences

Cyclone     ? The following questions refer to the above illustration of a middle-latitude cyclone. The dashed lines show the positions of the fronts six hours ago. At which location represented by the four positions on the map would you expect to hear the following 12-hour forecast: "Cloudy and cold this morning with snow this afternoon and tonight"?

A. position 1 B. position 2 C. position 3 D. position 4

Environmental & Atmospheric Sciences

Which of the following was largely destroyed by fire in 1871?

A. San Francisco B. Chicago C. Lisbon D. Tokyo E. Moscow

Environmental & Atmospheric Sciences

What country is Canada's single largest trading partner?

A) United States B) Japan C) Saudi Arabia D) Germany E) France

Environmental & Atmospheric Sciences