  Although the terms ocean and sea are often used interchangeably, a sea is generally considered to be smaller than an ocean. One definition of ocean is: a great bod â¦ y of interconnecting salt water that covers 71 percent of the Earth's surface.
Sharpie brand permanent markers. A permanent marker or indelible marker is a type of marker pen that is used to create permanent writing on an object. In general, the ink comprises a main carrier solvent, a glyceride, a pyrrolidone, a resin and a colorant, making it waterproof.
In recent years, prostate specific antigen (PSA) has es tablished itself as the most useful marker for adenocarci noma of the prostate and has almost replaced the total acid phosphatase and prostatic acid phosphatase (PAP) for screening, diagnosis and monitoring the prostate car cinoma patients.