Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Virtual creatures in action. The snapshots (from left to right) illustrate a scenario where the evolution of virtual creatures is being driven by food competition (green colored block). Adapted with permission from ref (34). Copyright 1994 MIT.
