Questions

Internet service providers (ISP's) emerged in the late 1980's and early 1990's.

The ARPANET was decommissioned in 1990.

By 1995, the Internet was fully commercialized in the U.S., when the NSFNet was decommissioned, removing the last restrictions on use of the Internet to carry commercial traffic.

The artificial kidney is the dialysis machine. Blood from the body is fed into the machine which removes nitrogenous wastes like urea and returns the blood back to the body.People with renal failure have to use this machine.

The ball with which Table Tennis is played is called Ping Pong Ball.

According to the International rules, the diameter of the ping pong ball must be not less than 39.5 millimeters and not greater than 40.5  millimeters having a mass of 2.7 grams.

Hispar and Beturaof the Hunza valley are over 57km long. They are the largest glaciers. Biafo and Baltaro of the shigar valley are 60 km long