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.
Yes, disposable razors are allowed in carry-on luggage. Straight razors or safety razors (where the razor blade can be removed) are not allowed in carry-ons and must be checked. , not so much. Those, along with other sharp objects â such as a box cutter or switchblade â are only allowed in checked luggage.