Answer:
No.
Explanation:
No, It is not possible to discover a fully preserved organism because after the death of organism, the decomposers feed on the animal and only the skeleton remains from decomposers. With the passage of millions of years, the fossil is not remain fully preserved due to the environmental conditions so that's why it is concluded that it is impossible to discover a fully preserved organism.
A Swim Bladder is not present in cartilaginous fishes. Also called a fish maw or gas bladder the swim bladder is a gas-filled bladder that allows many bony fish to control their buoyancy by filling or releasing gas form the bladder. This allows them to change bouyancy without wasting metabolic energy by swimming.
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Asymmetry is the lack of symmetry.
