People do not eat bubble gum, it is intended to be chewed but not swallowed, and nobody actually needs to chew bubble gum in an airplane, however, some people find that the chewing helps them to open their Eustachian canal, which they need to do in order to equalize the air pressure in their middle and outer ears, as the plane changes its altitude.
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Airplane windows need to be open during takeoff and landing to allow passengers to see outside and help maintain orientation in case of an emergency evacuation.
If by speech marks you mean qoutation marks (i.e. ""), then no, you do not need them, as the speech bubble implies it.
Window shades need to be up for takeoff on an airplane to allow natural light to enter the cabin in case of an emergency, helping passengers and crew see outside and assess the situation.
No, passports are for traveling to other countries.
If the speech bubble is used for direct speech or a question being asked, then yes, a question mark should be included inside the speech bubble to indicate that it is a question. This helps to clarify the tone and intention of the spoken words.
the planes don't need air pressure, the humans inside need oxygen to breath and the air gets thinner the higher you go
If you mean being an air hostess in training, then the things you need to do are practice swimming (in the case of airplane falling into water) , etcIf you are already one, then you will go around the airplane serving drinks and doing what the passengers tell you to do in order of satisfication.
Window shades on an airplane need to be up during landing for safety reasons. This allows passengers and crew to see outside in case of an emergency, such as a fire or evacuation. It also helps the crew assess the conditions outside the aircraft during landing.
You have an Exhaust leak, you need to get this fixed immediately. Carbon Monoxide can KILL.
Everyone needs a bubble machine.
A single person can build an airplane.