In an experiment, a control is used to establish a baseline to compare the results of the main experiment to. Having a control group rules out any environmental variables, such as temperature and... In an experiment, a control is used to establish a baseline to compare the results of the main experiment to. Having a control group rules out any environmental variables, such as temperature and...
Knives, including small pocket knives, are only allowed in checked bags. Only plastic and round-tip butter knives are allowed as carry-on blades. Most bladed items are allowed in checked baggage, including scissors, razors, swords, axes, box cutters and blade tools, if they are properly wrapped or sheathed.
Customers in any class of service who are travelling with an infant are permitted one extra piece of checked-in baggage that may not exceed 22 x 15 x 8 inches (55 x 38 x 20cm) in size or 22lb (10kg) where the weight concept applies and 50lb (23kg) where the piece concept applies.