Which of the Following Is Not a Piece of Evidence

question 116

Multiple Choice

Which of the following is not a piece of evidence supporting the idea that an impact caused the mass extinction that occurred 65 million years ago?

• A)Grains of quartz formed under high pressure are found in a layer of clay that dates to 65 million years ago.
• B)Unusually large abundances of iridium and other rare metals are found in a layer of clay that dates to 65 million years ago.
• C)A large impact crater along the coast of Mexico dates to 65 million years ago.
• D)Fossilized dinosaur bones contain fragments of rock from the impact.

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Definitions:

Alveoli

Tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place during breathing.

Secondary Bronchi

The branches of the main bronchus that lead into each lung, further subdividing into tertiary bronchi.

Bronchioles

Small respiratory airways within the lungs that extend from the bronchi and connect to the alveoli, facilitating air movement.

Larynx

The voice box, located in the neck, which contains the vocal cords and is involved in breathing, producing sound, and protecting the trachea against food aspiration.