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.
You can bring solid food in both carry-on and checked baggage. Examples of solid food products include meat, bread, fruits, vegetables, sandwiches, chips, cookies, cakes, muffins, granola bars, hard candies, cheese, nuts, crackers, chocolate bars and other similar food items. Non-solid food (e.g. yogurt, pudding, peanut butter, jam) in your carry-on must be in containers of 100 ml or less. 2  All containers must fit in the same clear, closed, resealable one-litre plastic bag, along with all other containers of liquids, food or personal items you are carrying.