Bile salts are involved in which of the following?
A) digestion
B) excretion
C) both a and b
D) neither a nor b
B
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Coal is composed of
A) petrified wood. B) buried plant material that has partially decayed. C) buried animal material that has partially decayed. D) a combination of oil-rich sediments and calcareous ooze.
The Columbia River volcanic field is related to ____
a. Miocene lava flows b. Eocene subduction c. a recent mantle plume d. Oligocene extension e. Miocene subduction
What is a large circular or elliptical depression at the summit of a volcano resulting from collapse
called? a. a caldera b. a rift valley c. a crater d. a volcanic vent e. a blow hole
The largest storm waves stir the subsurface water down to the ________
A) depth of tens of millimeters B) depth of tens of meters C) depth of tens of kilometers D) bottom, however deep it is E) depth at which the temperature goes below freezing