Why are oceans salty but not lakes? As water flows over land it picks up minute amounts of salts from the soil and rocks. This water does not pick up enough to be noticeable, and as it flows into lakes, it also â¦ flows out without appreciable evaporation. Only when the water reaches the end of its flow does it evaporate leaving the salt behind. As this continues throughout the mellennia, the salt concentration increases.
However, the average competitive rate for outsourcing bookkeeping and accounting services is right around $15-$20 per hour;, these services will not need 40 hours a week to service your business.
With professional house cleaning, get a detailed quote. The average price to hire a cleaning service is between $90 and $150. Rates vary depending on the size of your home and what services you want.Frequency is also a factor; many service providers offer lower rates for weekly cleanings compared to monthly or bimonthly ones. Additional charges often apply for:f you are having one room cleaned, it's usually more cost-effective to charge by the hour. If you are having your whole home cleaned, they will typically charge by the square foot. Some other factors that may affect your rate include: You can negotiate with residential cleaning agencies to reach a fair price.