(materials). A solvent in whose molecules there is either a permanent separation of positive and negative charges, or the centers of positive and negative charges do not coincide; these solvents have high dielectric constants, are chemically active, and form coordinate covalent bonds; examples are alcohols and ketones.1  Facebook.materials). A solvent in whose molecules there is either a permanent separation of positive and negative charges, or the centers of positive and negative charges do not coincide; these solvents have high dielectric constants, are chemically active, and form coordinate covalent bonds; examples are alcohols and ketones.
The bottleneck effect. The bottleneck effect is an extreme example of genetic drift that happens when the size of a population is severely reduced. Events like natural disasters (earthquakes, floods, fires) can decimate a population, killing most indviduals and leaving behind a small, random assortment of survivors.
A bottleneck, in a communications context, is a point in the enterprise where the flow of data is impaired or stopped entirely.Effectively, there isn't enough data handling capacity to handle the current volume of traffic. bottleneck can occur in the user network or storage fabric or within server s where there is excessive contention for internal server resources, such as CPU processing power, memory, or I/O (input/output).