List the Pivot Table Formulas in Excel 2010 and Excel 2013. 1  Select any cell in the pivot table. 2  On the Ribbon, under the PivotTable Tools tab, click the Options tab (Analyze tab in Excel 2013). 3  In the Calculations group, click Fields, Items & Sets. 4  Click List Formulas.
In the process of natural selection, individuals in a population who are well-adapted to a particular set of environmental conditions have an advantage over those who are not so well adapted.
Organisms (within populations) exhibit individual variation in appearance and behavior. These variations may involve body size, hair color, facial markings, voice properties, or number of offspring. On the other hand, some traits show little to no variation among individualsâfor example, number of eyes in vertebrates.