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.
1 Prepare for a lost, stolen, damaged, or delayed checked bag-Pack your carry-on bags so that you will be able to survive for 48 hours at your destination without your checked bags. 2  If you are checking more than one piece of luggage, distribute items so that the loss of one bag will not cause undue hardship. You may also want to use small ribbons, stickers, or other identifying marks on the bag to make it easier to spot. 2  Check the airline luggage tags-At check in, make sure that tags that the gate agent attaches to each piece of checked luggage matches your baggage claim tickets.