Examlex
A theory is an untested assertion of alleged fact.
Bipedal
The ability to walk on two legs, a key characteristic that differentiates humans and some other species from most animals.
Homo Erectus
An extinct species of early human that lived throughout much of the Pleistocene geological epoch, known for its upright walking ability.
Fossil Record
The collection of all known fossils and their placement in order, which provides evidence about the history of life on Earth.
Bipedal
Bipedalism refers to the ability of an organism to walk on two legs, a key feature that distinguishes humans and their ancestors from most other primates.
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