Pedigrees can be divided into three categories: Acyclic rooted graphs, cyclic but perfectly drawable graphs, and nondrawable cyclic graphs. The drawability of a pedigree depends on how well a ...

Graph: 11-Year Cyclic Antarctic Ozone Hole and Stratospheric Cooling (IMAGE) University of Waterloo. Caption. Chlorofluorocarbons are to blame for global warming since the 1970s and not carbon ...