Earth's Modern Atmosphere ____

question 1

Multiple Choice

Earth's modern atmosphere ____.

• A) is composed of 78 percent nitrogen
• B) does not filter high-energy ultraviolet rays
• C) is similar to that found on Venus
• D) is composed of 80 percent oxygen

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Definitions:

Organ of Corti

A structure in the cochlea of the inner ear that produces nerve impulses in response to sound vibrations.

Kinocilium

A specialized type of cilium on the apical surface of hair cells in the sensory epithelium of the vertebrate inner ear, crucial for the detection of sound and movement.

Basilar Membrane

A structure in the cochlea of the inner ear that supports the organ of Corti, playing a critical role in sound perception.

Cilia

Microscopic, hair-like structures on the surface of cells that move in a wave-like manner to propel substances.