The establishment stage of forest development following disturbance can be described as ________
A) tree seedlings becoming established in the gaps in the forest
B) tree seedlings germinating on the recently cleared ground
C) trees becoming much larger and more widely spaced in the forest
D) very large, old trees that are abundant
E) large trees continuing to grow with the biomass of the forest increasing
B
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You are hopping on boulders beside a quiet stream that runs through a V-shaped valley. How did the boulders get there? The boulders were likely
A. deposited along the stream bank by wind. B. carried in the stream then deposited at the stream bank. C. produced when chemical weathering broke up the rock along the sides of the valley. D. none of the above
If water vapor saturation occurs at -2 degrees Celsius, this is formed: ________
Fill in the blank(s) with the appropriate word(s).
____is a measure of how much water a material can hold, and ___ measures how easily the material transports fluids
A)Porosity; permeability B)Sorting; permeability C)Infiltration capacity; permeability D)Permeability; porosity E)Infiltration capacity; porosity
You are the chief executive officer (CEO) of a large bus company that transports passengers long distances across the United States
You want to be environmentally "friendly" and are considering replacing your older buses with those that run on hydrogen fuel. However, your executive board dislikes the idea. Which one of the following arguments is valid and could be used by the board to dissuade you from adding hydrogen-fueled buses to your fleet? A) Hydrogen vehicles are actually more polluting than gasoline-powered buses, so the environmentally friendly thing to do would be to add gasoline-powered buses to the fleet. B) Hydrogen vehicles are unsafe and have been known to spontaneously combust when rear-ended. C) Hydrogen vehicles have a range of only around 50 miles, and they take hours to refuel, so hydrogen buses would not be a wise choice for vehicles traveling across the country. D) It may be difficult along some bus routes to find gas stations that sell hydrogen fuel.