Where will the North Star be, relative to the celestial coordinates, 12,000 years from now?
A) 23 1/2 degrees away from the pole, due to precession.
B) Several degrees from the North Pole position, with Vega as the North Star.
C) Right where it is now; it isn't going anywhere.
D) None of these is correct.
B
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In the diagram below, the dashed horizontal line represents the exponential growth coefficient
A) carrying capacity.
B) competition level.
C) reproduction rate.
D) niche level.
As of the year 2002, ______________ has become Australia's number one means of economic income.
Fill in the blank(s) with the appropriate word(s).
Which Milankovitch cycle refers to a “wobbling” of the Earth’s axis of rotation?
A. orbital shape B. axial precession C. axial tilt D. orbital shift E. axial flip
The Kaskaskia sequence can be identified by the presence of the basal
a. black shale. d. coal beds. b. reef complexes. e. A and C c. well-sorted quartz sandstones.