The biological species concept is the most widely accepted species concept. It defines species in terms of interbreeding. For instance, Ernst Mayr defined a species as follows:species are groups of interbreeding natural populations that are reproductively isolated from other such groups..The biological species concept explains why the members of a species resemble one another, i.e. form phenetic clusters, and differ from other species.When two organisms breed within a species, their genes pass into their combined offspring.he biological species concept explains why the members of a species resemble one another, i.e. form phenetic clusters, and differ from other species. When two organisms breed within a species, their genes pass into their combined offspring.
conduit - a passage (a pipe or tunnel) through which water or electric wires can pass; the computers were connected through a system of conduits. aqueduct - a conduit that resembles a bridge but carries water over a valley. duct - an enclosed conduit for a fluid.
Conduits: Electrical Metallic Tubing (EMT). Another example of rigid electrical conduit is the EMT, also known as Electrical Metallic Tubing. An EMT conduit is made of steel; in some cases aluminum is also used, cheaper than a galvanized rigid conduit and lighter than a GR conduit.onduits: Aluminum Conduits. An aluminum conduit is a rigid conduit commonly used in commercial and industrial applications. Aluminum conduits are used to prevent corrosion and are the preferred conduit used in areas where large amounts of water and corrosion-prone areas.