Shigella sonnei (the most common species in the U.S.) Shigella flexneri; Shigella boydii; Shigella dysenteriae; The transmission of most Shigella infections is caused by the bacterium passing from stools or soiled fingers of one person to
System maintenance. One advantage of the septic tank/absorption field system is that it has no moving parts, but it does require maintenance. Annual inspections of your septic system are recommended to ensure that it is working properly and to determine when scum and sludge in the septic tank should be cleaned out.
Absorption of light; Absorb; Absorbing surface. The absorption of light occurs when a ray of light strikes a surface. The energy from the light is transferred to the surface material. The transfer creates heat (usually small amounts). An absorbing surface prevents reflection or diffusion of light striking on the surface. In practice, perfect absorption does not exist.