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.
In biology, adaptation is the process by which an organism changes to become better suited to survive in their environment. An adaptation is a feature which helps an organism survive in its normal habitat.   For example animals which live in the arctic have thick fur to reduce heat loss. T â¦ he thick fur is an adaptation.