Evidence supporting the Big Bang theory includes the presence of cosmic microwave background radiation, visual observation of redshifted objects and the abundance of primordial elements found throughout the universe.
An open fracture is most accurately defined as a fracture in which the overlying skin is no longer intact. A fracture is normally the break in the continuity of the bone. It is also called a compound fracture, in which the fracture is an open wound or break in the skin near the site of the broken bone. Immediate treatment for an open fracture focuses on preventing infection at the site of the injury.
Pericardium or pericardial sac.
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B. vertebrates and invertebrates.
