Sometimes the temperature does not decrease with height in the troposphere, but increases. Such a situation is known as a temperature inversion. Temperature inversions limit or prevent the vertical mixing of air.
Middle range machines can cost on average $400 and are often multi-function with copier and laser printer capabilities. Finally, high-end machines which offer high speeds, high capacity and high resolution come at a higher price-expect to pay $1000 - $2500 for such a fax machine.
Fax machine uses a phone line to transmit a copy or image of important documents such as forms, receipts, contract and any legal documents. With the rise of the internet fax t â¦ echnology, where documents runs over internet, you can send and receive faxes without having a dedicated phone line.