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A consequence of Einstein's theory of relativity is:
Paired Fins
Appendages found on fish that are used for stabilization, steering, and propulsion through the water.
Chondrichthyes
The class of cartilaginous fishes that includes the sharks, rays, and skates.
Lungs
Main organs of the respiratory system, involved in the exchange of oxygen from the atmosphere with carbon dioxide from the blood.
Evolved
A term referring to the process by which species undergo gradual changes in their genetic composition and traits over generations, often in response to environmental pressures.
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