Die sogenannte Katzenpyramide veranschaulicht das Problem

 

Katzenpyramide

 

Ein Katzenpaar bekommt beispielsweise zweimal im Jahr Nachwuchs.

Angenommen, aus einem Wurf mit 6 Kätzchen überleben nur 3 Tiere,

so sind das bereits nach 10 Jahren über eine Million Kätzchen!

Die Katzenpyramide macht es deutlich:

                                                                                                              Jahr         Katzen

 

                                                                                                              1                      8

                                                                                                              2                     32

                                                                                                              3                    128

                                                                                                              4                    512

                                                                                                              5                   2.048

                                                                                                              6                   8.192

                                                                                                              7                  16.384

                                                                                                              8                   65.536

                                                                                                              9                  262.144

                                                                                                             10              1.048.576