Examlex
An example of a heat engine is
Homo Habilis
Extinct hominin; earliest named Homo species; known only from Africa, where it arose 2.3 million years ago.
Homo Erectus
An extinct species of early human that lived throughout Africa and Eurasia during the Pleistocene Epoch.
Vertebrate Lung
A respiratory organ found in vertebrates that exchanges oxygen and carbon dioxide with the environment.
Fishes
Aquatic, gill-bearing animals that lack limbs with digits, often featuring scales, fins, and diverse forms and life histories.
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