A(n) ________ -shaped valley (in cross section) is characteristic of glacial erosion.

A. U
B. V
C. S
D. I
E. Y


Answer: A

Environmental & Atmospheric Sciences

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Exhaled breath from your mouth in cold weather produces ____ fog

A) radiation B) frontal C) advection D) evaporation (mixing)

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Over 100 years ago, nearly 75% of waste made up from residential homes in New York City was ________

A) food waste B) plastics C) paper D) wood E) coal ash

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What is NOT TRUE regarding desertification?

A) Removal of trees allows a desert to advance. B) Cutting of trees lowers the capacity of the land to absorb moisture. C) Desertification is a symptom and cause of the food problem in developing countries. D) Areas subject to desertification have greater chances of drought. E) All of the above are true.

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Hydrofluoric acid, HF, is a weak acid. Which of the following is the correct expression for the Ka of hydrofluoric acid?

A) [H3O+][HF]/[F-] B) [HF]/[ H3O+][F-] C) [H3O+][F-]/[HF] D) [HF][F-]/[ H3O+]

Environmental & Atmospheric Sciences