The Earth's Axis Is Currently Tilted Relative to the Plane

question 29

Multiple Choice

The earth's axis is currently tilted relative to the plane of its orbit by

• A) 1°.
• B) 12.5°.
• C) 23.5°.
• D) an angle that varies with the seasons.

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Definitions:

Middle Portion

The central segment or part of an object, area, or concept.

Renin

A hormone secreted by the kidney that helps to regulate blood pressure.

Blood Pressure

A measure of the force that circulating blood exerts against the walls of the arteries.

Renal Cortex

The outer portion of the kidney, containing the nephrons' filtering structures, involved in urine production and blood filtration.