They can be used atleast three times a day, for breakfast, lunch and dinner
A gas often used a an insulator
Neon gas is a colorless odorless gas that fills tubes that are often used in electrical advertising signs.
Gas in a metal container, which burns and can be used to cook (often used to cook at camp sites)
Hydrogen gas is an extremely high explosive gas often used to make bombs...
natural gas is used by humans every day all around the world
Carbon dioxide.
It is used for minor surgeries.
Carbon dioxide (CO2) is the gas often used to put out fires, especially in fire extinguishers.
Yes, gas & kerosene lamps were used exclusively before the invention of electricity.
Gas masks are used when the air is polluted so they give you fresh air. They are often used when there is toxic gases around.
The word "nebula" is often used for this.
Neon.