OpenSimulator Archive. OAR file is an OpenSimulator Archive. OpenSimulator is an open source multi-platform, multi-user 3D application server. It can be used to create a virtual environment (or world) which can be accessed through a variety of clients, on multiple protocols.
biological adaptation the adaptation of living things to environmental factors for the ultimate purpose of survival, reproduction, and an optimal level of functioning. color adaptation. 1. changes in visual perception of color with prolonged stimulation.
By Jennifer Kennedy. Definition: An adaptation is a physical or behavioral characteristic that has developed to allow an organism to better survive in its environment.Adaptations are the result of evolution, and may occur when a gene mutates, or changes by accident.xamples: One physical adaptation used in the intertidal zone is a crab's hard shell, which protects it from predators, drying out and being crushed by waves. A behavioral adaptation in the oceans is the use of loud, low-frequency calls by fin whales to communicate with other whales over great distances.