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Describe any two sources of variability that the human genetic process creates.
Cartilaginous Fish
Fish characterized by having bodies made of cartilage rather than bone, including sharks and rays.
Skeletal Adaptations
Changes in the skeletal structure that occur over time to help an organism better survive in its environment.
Four-Legged Walkers
Animals that use all four limbs to support their movement across a substrate, showcasing a quadrupedal mode of locomotion.
Land Dwellers
Organisms that live predominantly or entirely on land as opposed to in the water or air.
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