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Some male birds and mammals congregate in communal courting grounds called leks.
Charles Darwin may be dead and gone but a recent write-in campaign has pitted him against Republican
Electrocardiography. (a) Electrodes are placed on the patient’s chest to record the electrical event
The first step in field recovery involves surveying the site, sometimes with special equipment.
The larynx, trachea, bronchi, and lungs with an expanded view showing the structures of the alveolus ...
The upper intake manifold, often called a plenum, attaches to the lower intake manifold.