When to Use . . . . . . a Line graph. Line graphs are used to track changes over short and long periods of time. When smaller changes exist, line graphs are better to use than bar graphs. Line graphs can also be used to compare changes over the same period of time for more than one group. . . . a Pie Chart.
Mouse Potato. Definition - What does Mouse Potato mean? Mouse potato is a term for someone who spends a lot of leisure time or discretionary time sitting in front of a screen connected to the Internet. It is a modern take on the older term couch potato, that refers to someone who spends a lot of time in front of a television.
A knockout mouse (left) that is a model for obesity, compared with a normal mouse. There are several thousand different strains of knockout mice. Many mouse models are named after the gene that has been inactivated.n some instances, the gene may serve a different function in adults than in developing embryos. Knocking out a gene also may fail to produce an observable change in a mouse or may even produce different characteristics from those observed in humans in which the same gene is inactivated.