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.
Bioaccumulation is the growth of a toxins levels in the many tissues of an organism. Biomagnifcation is the procees during which a chemical or toxin makes its way through all levels of the food chain.ioaccumulation is the growth of a toxins levels in the many tissues of an organism. Biomagnifcation is the procees during which a chemical or toxin makes its way through all levels of the food chain.