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The Greatest Advance of Sui Yangdi,the Second Sui Emperor,was

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The greatest advance of Sui Yangdi,the second Sui emperor,was


Definitions:

Skeleton

The internal framework of bone and cartilage in vertebrates (including humans) that supports and protects the body while also aiding in movement.

Asymmetrical Body

A bodily form in which the left and right sides do not mirror each other in shape or size, uncommon among higher organisms.

Phylum

A rank in the biological classification system that is below kingdom and above class, grouping together organisms that share a common ancestor and basic body plan.

Porifera

A phylum of aquatic invertebrate animals that comprises the sponges, characterized by a porous body and a simple construction.

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