Which of the following conditions favor the development of dust devils?

a. hot, moist days
b. hot, dry days
c. cold, moist days
d. cold, dry days
e. moderate temperature, dry days


ANSWER: b

Environmental & Atmospheric Sciences

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Surface pressure is about

A) 1500mb. B) 2500mb. C) 1000mb. D) 200mb. E) 20mb.

Environmental & Atmospheric Sciences

Which of the following would best represent a clumped population distribution pattern?

A) a pod of 40 migrating gray whales in the Bering Sea B) pine trees within a pine plantation C) earthworms in the soil of a garden D) eagles nesting in the tallest trees in the Grand Canyon E) oaks planted on city streets

Environmental & Atmospheric Sciences

Which construction material would make a house safest in a moderate earthquake?

a. ?Wood-frame construction sheathed with plywood. b. ?Brick and mortar. c. ?Adobe. d. ?Cinderblock and mortar. e. ?Poured concrete.

Environmental & Atmospheric Sciences

The atmospheric residence times of inert gases, such as helium and argon,

A. are strongly controlled by human activities. B. are quite short, as these gases are removed by precipitation. C. have virtually infinite residence times. D. cannot be estimated because their natural cycles are complex.

Environmental & Atmospheric Sciences