Categories: R
Robot
Robots are machines that are able to automatically do tasks and activities. Robots are often used in factories. Robots can be very small or very large, depending on what they were designed to do. Robots Read more…
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Referee
Referees are in charge of making sure that games are played according to rules. All sports competitions will have a referee, although they may be called “judges” or “umpires” in some sports. In order to become Read more…
Reservoir
Reservoirs are lakes where water is stored. Reservoirs can be formed by building a dam across a flowing river. Water from reservoirs can be used by people for watering crops or for drinking and bathing. If Read more…