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.It can  also refer to a physical or genetic trai â¦ t that helps an organism to  be better suited to survive in their environment.ithin a population of animals there are variations and differences. So when an environmental change occurs those animals that are better suited to that environment survive a â¦ nd are able to reproduce sucessfully.