A(n) ________ -shaped valley (in cross section) is characteristic of glacial erosion.
A. U
B. V
C. S
D. I
E. Y
Answer: A
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Exhaled breath from your mouth in cold weather produces ____ fog
A) radiation B) frontal C) advection D) evaporation (mixing)
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+]
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.
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