How Do We Know That Australopithecines and Paranthropoids Were Definitely

question 36

Multiple Choice

How do we know that australopithecines and paranthropoids were definitely hominins?

• A) They have a parabolic dental arch and reliable evidence for bipedalism.
• B) They have hominin facial features and relatively short arms.
• C) They have reliable evidence for bipedalism and relatively short arms.
• D) They have hominin facial features and a parabolic dental arch.

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Definitions:

Functional Residual Capacity (FRC)

The volume of air remaining in the lungs after a normal, passive exhalation, critical for gas exchange between breaths.

Tidal Volume (TV)

The volume of air moved into or out of the lungs during a normal breath, at rest.

Residual Volume (RV)

The volume of air remaining in the lungs after a maximal exhalation, preventing lung collapse and ensuring continuous gas exchange.

Inspiratory Reserve Volume (IRV)

The extra volume of air that can be breathed in beyond a standard breath.