The purpose of this elegant and complex plumbing system is to deliver oxygen and nutrients to peripheral tissues and remove carbon dioxide and wastes and transport them to the excretory organs.
(The purpose of this elegant and complex plumbing system; is; to deliver oxygen and nutrients to peripheral tissues and remove carbon dioxide and wastes and transport them to the excretory organs)
The purpose of this elegant and complex plumbing system
is
to deliver oxygen and nutrients to peripheral tissues and remove carbon dioxide and wastes and transport them to the excretory organs