The Following Questions Refer to the Description and Figure Below

question 43

Multiple Choice

The following questions refer to the description and figure below.
The figure represents a cross section of the sea floor through a mid-ocean rift valley, with alternating patches of black and white indicating sea floor with reversed magnetic polarities. At the arrow labeled "I" (the rift valley) , the igneous rock of the sea floor is so young that it can be accurately dated using carbon-14 dating. At the arrow labeled "III," however, the igneous rock is about 1 million years old, and potassium-40 dating is typically used to date such rocks. Note: The horizontal arrows indicate the direction of sea-floor spreading, away from the rift valley.

Figure 25.1
-If a particular marine organism is fossilized in the sediments immediately overlying the igneous rock at the arrow labeled "II," at which other location, labeled A-E, would a search be most likely to find more fossils of this organism?

• A) B only
• B) C only
• C) D only
• D) B and C
• E) C and D

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Definitions:

Vasopressin

A hormone released by the pituitary gland that regulates water retention in the kidneys and increases blood pressure.

Hyposecretion

A condition where a gland produces less of its hormone than the normal level, potentially leading to various disorders or symptoms.

T₄

Also known as thyroxine, it's a hormone produced by the thyroid gland that plays a crucial role in metabolism and energy regulation.

Correct Meaning

The accurate interpretation or significance of a word, phrase, sentence, or text.