Which of the following combinations make for the best groundwater reservoir?
A. high permeability and low porosity
B. high permeability and high porosity
C. low permeability and high porosity
D. low permeability and low porosity
Answer: B
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A spacewalker and a massive asteroid move toward each other under the influence of gravity. Which force, if either, is greater?
A. The force on the asteroid. B. Depends on distance of separation. C. Both forces are equally strong. D. The force on the spacewalker.
Nitrogen is the ______ component of the atmosphere in terms of volume.
A - second B - third C - fifth D - fourth E - main
A coyote, which can alter its food intake to match seasonal abundance of plants, fruits, or small animals, is considered to be ________
A) a clumped species B) an endemic, able to be flexible C) a generalist, able to be flexible in major dimensions of its niche D) a specialist, which has no niche E) density-independent and resource neutral
An historical process that encompasses the entire economic and social life of a nation, resulting in change for the better is known as ________
Fill in the blank(s) with correct word