Which time scale of climate record observations shows a global cooling trend?
A. last 70 million years
B. last 150,000 years
C. last 1000 years
D. last 150 years
E. none of these
A
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Where does the earth receive most of its energy?
A. external fission B. internal combustion C. internal fission D. external fusion E. internal fusion
The topography and latitudinal position of North America are important factors in air mass interactions
Indicate whether the statement is true or false
What is a mineral resource?
A. sand and clay minerals used in construction. B. minerals that contain useful metals. C. any rock or mineral that is non-organic. D. rock body containing economically valuable minerals. E. any rock or mineral that is useful to humans.
Which of the following factors helps prevent the growth of harmful algal blooms (HABs)?
Large concentrations of Canada Geese Maintaining native plants along waterways Manure runoff from livestock areas Runoff of lawn and crop fertilizers