Which way was the current (either wind or water) moving during deposition of this section of rocks?
A. there is no way to tell
B. away from the camera
C. toward the camera
D. toward the right
E. toward the left
Answer: E
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Scientific hypotheses differ from scientific theories in that they are
a. widely accepted descriptions of what we find happening over and over in nature b. tentative explanations that need further evaluation c. not subject to proper investigation and testing d. arrived at after extensive mathematical modeling e. tentative explanations that need further evaluation and not subject to proper investigation and testing
Which of the following is true of water budgets?
A) In the winter, when water use is low, evapotranspiration exceeds precipitation B) In the winter, when water use is low, precipitation exceeds exceeds evapotranspiration C) By springtime and early summer, precipitation exceeds evapotranspiration D) By late summer, precipitation exceeds evapotranspiration E) Evapotranspiration never exceeds precipitation
What is one reason diatomaceous earth is economically valued?
A) It can be used as a fossil fuel alternative. B) It can be used for various filtration systems. C) It can be broken up for gravel and used as building materials. D) It demonstrates the presence of "marine snow."
The ozone thinning ("hole") that occurs in the upper atmosphere over each pole in winter is due primarily to
A. chlorofluorocarbons. B. global warming. C. lack of solar ultraviolet energy reaching the pole. D. volcanic eruptions.