Which of the following best embodies the qualities of a scientific theory?
A) All gases, liquids, and solids consist of atoms.
B) Students who study for their environmental science exams will perform better on those exams than those who do not.
C) Dangerous wildfires in California could be avoided by better fire prevention strategies.
D) Prairies that have larges herds of bison show greater plant diversity than prairies without bison.
E) Squirrels in central Illinois prefer to build their nests in oak trees instead of hickory trees.
A
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Why do 2500 economists, including eight Nobel Prize Winners in economics, believe that the U.S. tax system is backwards?
A. because it encourages more pollution B. because it encourages more jobs C. because it discourages resource waste D. because it discourages environmental degradation
What are two major and very useful differences between P- and S-waves? What will be an ideal response?
This type of fog is NOT the result of air cooling to the dew point:
A) radiation fog. B) advection fog. C) upslope fog. D) steam fog.
What is an amphidromic point?
A) A node in the center of the Earth B) A node in the center of an ocean basin C) A node in the center of the Earth-moon orbit D) A node that indicates the peak in a tidal wave's crest