  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.
Perceptual mapping is a marketing research technique used to compare different product brands across the two or more dimensions. A typical technique is to map the similarities between the products perceived by the research subjects.ere's an example of a perceptual map of similarity: Another approach is use of preference data. You can collect data based upon a comparison of two products or rankings of several products.