Which of the following is characteristic of a buffer?
A) The pH will go down significantly when H3O+ is added to the buffer.
B) The pH will go down very slightly when H3O+ is added to a buffer.
C) The pH will go up significantly when H3O+ is added to the buffer.
D) The pH will go up very slightly when H3O+ is added to the buffer.
B
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What is the definition of an ephemeral stream?
A) A distributary channel on a stream delta B) A stream that meanders back and forth across a valley C) A stream that has interweaving channels and is choked with sediment D) An intermittent stream that only has water after specific episodes of rain
Outdoor air pollution is reduced when ____.
A. buildings slow wind speed and reduce dilution of pollutants B. hills and mountains reduce the flow of air in valleys C. high temperatures promote formation of photochemical smog D. chemical reactions produce acidic precipitation which falls out of the atmosphere E. temperature inversions form over cities surrounded by mountains
Regions that show a great deal of variation in temperature, precipitation, and vegetation over a relatively short vertical change in elevation would, according to Köppen, be classified as ____
a. ?polar tundra b. ?subpolar c. ?polar ice cap d. ?torrid e. ?highland
The United States is the largest global consumer of energy, second only to what country?
A) Canada B) China C) Russia D) Japan E) United Kingdom