  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.
Â­Â­Â­So what, exactly, do a few milliliters of spit tell you? The most important thing you'll learn is what kind of genetic markers you carry. A genetic marker is any alteration in your DNA that may indicate an increased risk of developing a specific diseaÂ­se or disorder. Because SNPs are, by their very definition, variations in DNA, they can be used as flags or markers for nearby DNA that affects your health. How CRISPR Gene Editing Works.