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Limitation of using animal transport are;Animals can only carry small loads compared to vehicles.They are slow as they need to feed and rest on the way.The can only travel over short distances as they get tired in travelling over long distances.Animals can be attacked by diseases or wild animals leading to their death.Animals can only move during the day as they cannot move properly at night.Some pack animals are stubborn when tired or heavily loaded e.g the donkey.
Advantages of using unbounded media include;FlexibleSpan large geographical area easilyIt facilitates communication to very remote areas.
Advantages of using line graphs to represent statistical data include;They are easy to drawThey allow comparisonThey are easy to read/interpretThey give clear visual impressionThey can be used to show a wide range of data
Disadvantages of using air transport;It is expensive to maintain an aircraftAirports are expensive to buildIt requires a lot of land to put an airportAircrafts can only take off and land in specific areas hence inconveniencing the usersAircrafts cannot carry bulky good as compared to other means of transportIt is very expensive to travel by airRunning airlines requires specialized skills and personnel who are expensive to trainIncase of accidents, losses are very high since there are few survivorsBad weather like rainfall leading to delays and re-schedules
Advantages of using cheque as means of payment includeCheque are more secure that notes.Cheque are convenient to carry.Payment can be made by cheque without travelling.Cheque provide means for future reference.