Factors that decrease population growth can be defined as environmental stress including limitations in food, predation, and other density-dependant factors (Sibley & Hone 2002). However, many sources of environmental stress affect population growth, irrespective of the density of the population. Density-independent factors, such as environmental stressors and catastrophe, are not influenced by population density change.
Zoan was the capital of the Hyksos rulers, or shepherd kings, in whose time Jacob came into Egypt, and their monuments have been found at the site, which favors the conclusion that its plain was that land of Rameses (Genesis 47:11 Exodus 12:37; see RAAMSES) where the Hebrews had possessions under Joseph.
The setting for the story is an ant colony in Central Park in New York City. The protagonist is Z-4195 (Woody Allen), or Z for short, a neurotic and pessimistic worker ant living in a wholly totalitarian society who longs for the opportunity to truly express himself. His friends include fellow worker Azteca (Jennifer Lopez) and a soldier ant, Weaver (Sylvester Stallone).