The fate of three groups of microorganisms â bacteria, protozoa, and viruses â in wastewater is an important consideration in onsite sewage treatment and disposal systems (hereafter referred to as septic systems).he fate of three groups of microorganisms â bacteria, protozoa, and viruses â in wastewater is an important consideration in onsite sewage treatment and disposal systems (hereafter referred to as septic systems).
Forget maps......Chicago is in zone 5...and gardeners wishing to plant those plants that are hardy to the Chicago area had better realize that zone 5 plants are the ones to buy. Besides zones are a relative term. Chicago is on the shores of Lake Michigan and the closer to the Lake, the more moderate the temperatures.
Guide to Chicago weather in April. The average maximum daytime temperature in Chicago in April is a comfortable 15Â°C (59Â°F). The average night-time temperature is usually a cold 3Â°C (37Â°F). There are usually 7 hours of bright sunshine each day, which represents 55% of the 13 hours of daylight.