Bipedalism, Considered a Key Defining Characteristic That Differentiated Early Hominins

question 48

Multiple Choice

Bipedalism, considered a key defining characteristic that differentiated early hominins from other apes,

• A) evolved as a result of anatomical changes caused by an increase in brain size.
• B) may have evolved as a result of anatomical changes caused by stone tool manufacturing.
• C) was accompanied by a sharp increase in hominins' climbing abilities.
• D) resulted in greater exposure to heat stress because on two feet, hominins spent increasingly more time in the open grasslands.
• E) perhaps developed in the woodlands but became even more adaptive in a savanna habitat.

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Definitions:

Unconformity

A discontinuity in sedimentary rock sequences indicating a period of erosion or non-deposition.

Numeric Ages

Ages or dates assigned to geologic events or materials in years, often determined through radiometric dating.

Volcanic Features

Volcanic features refer to the various physical formations created by the process of volcanism, including craters, calderas, lava flows, volcanic ash deposits, and more.

Depositional

Pertaining to the geological process in which sediments, soil, and rocks are added to a landform or landmass through the action of wind, water, or ice.