usually Argon or Nitrogen
incandescent , compact fluorescent
there are 98 different kinds of light bulbs. including colored light bulbs
Argon and nitrogen are the two main gases used in bulbs today.See related links below
The main gases in Earth's atmosphere are nitrogen, followed by oxygen.
Hydrogen and helium are the two main gases in the Universe.
Hydrogen and Helium
Fluorescent lights help the environment by conserving energy and being more efficient.Traditional bulbs produce about 15 lumens per watt, while fluorescent bulbs produce between 50 to 100 lumens per watt. This makes fluorescents bulbs five or six times more efficient than traditional bulbs.Also, the concepts behind the two bulbs are different. Traditional, or incandescent bulbs create heat in order to create light, which wastes a lot of energy. Fluorescent bulbs use a gas containing argon and mercury vapor that creates ultraviolet photons.This helps the environment by not wasting resources.Alternative AnswerFluorescent lamps might lower your electricity bill, but they use more energy and resources to manufacture, compared with incandescent lamps. They also contain mercury and other toxins. So fluorescent lamps probably do more damage to the environment than incandescent lamps. So, if you want to save on your energy bills, use fluorescent lamps; if you want to protect the environment, then use incandescent lamps.
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There are not two gases in the layer but one. Ozone is the only gas present in the ozone layer.
No, you only need replace the one that's broken. They all run independently.
canada
Helium and Hydrogen