Permafrost lies beneath ____ percent of the land surface on Earth
A)0
B)10
C)20
D)40
E)50
C
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Which of the following situations provides an example of a "back door" cold front?
A. a cold front moving into British Columbia from the Pacific Ocean B. a cold front moving into the desert southwest from northern Mexico C. a cold front moving into the Maritimes from the Atlantic Ocean D. a cold front moving in a clockwise direction around a low pressure centre
The sail-like fin on the backs of the pelycosaur did NOT function as a ____
a. sexual display b. means of locomotion c. means of protection d. means to look more ferocious
e. thermoregulatory structureCities generate large amounts of heat because of factories, cars, lights, air conditioning, and dark roofs. This creates a phenomenon called ____.
A. urban heat island B. light pollution C. heat pump D. heat stroke E. greenhouse effect
Earth's oceanic crust is older than the continental crust.
Answer the following statement true (T) or false (F)