Permafrost lies beneath ____ percent of the land surface on Earth

A)0
B)10
C)20
D)40
E)50


C

Environmental & Atmospheric Sciences

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Cities 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

Environmental & Atmospheric Sciences

Earth's oceanic crust is older than the continental crust.

Answer the following statement true (T) or false (F)

Environmental & Atmospheric Sciences

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

Environmental & Atmospheric Sciences

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 structure

Environmental & Atmospheric Sciences