The Modern Atmosphere, with the Amount of Oxygen That Exists

question 147

True/False

The modern atmosphere, with the amount of oxygen that exists today, developed as early as 600 million years ago.

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Definitions:

Ortolani Sign

A clinical sign used to detect hip dislocation or dysplasia in infants by assessing if the hip can be relocated into the socket.

Adducts

The movement of a limb or other part toward the midline of the body or toward another part.

Swan-neck Deformity

A condition characterized by hyperextension of the proximal interphalangeal joint and flexion of the distal interphalangeal joint of the fingers, often associated with rheumatoid arthritis.