Any easily identified fossil with a wide geographic distribution and short geologic range; useful
for determining relative ages of strata in different areas:a.
guide fossil d. series
b. trace fossil e. conformable
c. system
A
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Which feature on this figure is formed by the melting of the mantle above the slab?
A) A
B) B
C) C
D) D
E) E
Langmuir circulation occurs only ____
a. at the equator b. in the top 20 meters of water c. below 100 meters of water d. at deep-ocean depths e. below the pycnocline
What changes are caused by the Southern Oscillation in the Pacific Ocean?
a. Trade winds blow from east to west. b. Low pressure builds in the western Pacific. c. Trade winds blow from west to east. d. High pressure builds in the eastern Pacific. e. Equatorial currents move faster.
There is no evidence in the geologic record that multi-celled organisms of any kind existed prior to the Cambrian
Indicate whether the statement is true or false