Milankovitch cycles are used to explain the cycles of cold and warm climates that characterized the Ice Ages based on ________
A) evolution of plants and animals and human impact
B) solar flares and variations in the moon's orbit over time
C) variations in the earth's orbit about the sun and precession of the earth's axis
D) plate tectonics and sea level rise
C
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An example of an inland wetland is a
A. salt marsh. B. stream. C. coral reef. D. swamp. E. lake.
Transistors are
A. giving way to newer devices. B. enormous in numbers. C. relatively rare in the world of electricity. D. within all living creatures.
Which of the following generally is true about caves formed by dissolution?
A. hot geothermal waters introduce acids into shallow rocks B. carbon dioxide rises from depth and dissolves calcite and clay C. groundwater removed material from limestone D. acidic waters dissolve feldspar in granite, producing clay
A ring of light encircling the sun or moon could be either ____
a. a rainbow or a halo b. a halo or a sundog c. a halo or a corona d. a sundog or a crepuscular ray e. a sundog or a glory