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.
When traveling in the USA, the TSA enforces rules on what type of items can be carried aboard your flight in your carry-on bags, as well as what can be packed in your checked baggage. The following lists detail which items are allowed, and which are prohibited. Quick Link to Lists: Make-up & Toiletries.