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.
IMPROVED ANSWER:    Adaptation is a characteristic of an organism that makes it better  able to survive and reproduce in its environment.   Some forms of life â¦ are adapted to living in many different  environments. For example, people live in all kinds of climates,  ranging from the tropics to the Arctic. 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.